Add 500 points to the problem of return ticket.

Article 21 If the passenger fails to complete part or all of the voyage within the validity period of the ticket due to the reasons of the carrier or the passenger, he may request a refund within the validity period of the ticket. Passengers who request a refund shall handle it with the "flight coupon", "passenger coupon" or the unused part of the ticket. Refund can only be handled at the ticket office of the carrier or its sales agent at the place where the ticket is issued, the origin of the flight and the end of the trip. The fare can only be refunded to the passenger or the payer of the ticket.

Twenty-second passengers who voluntarily refund their tickets shall provide their valid identity documents in addition to their valid tickets, and shall be handled in accordance with the following provisions.

(1) If a passenger requests a refund within 24 hours or 2 hours before the scheduled departure time of the flight, a refund fee of 10% of the passenger fare will be charged; Ask for a refund within two hours before the scheduled departure time of the flight, and charge a refund fee of 2% of the passenger fare. If you ask for a refund after the scheduled departure time of the flight, it will be treated as a missed flight.

(2) Passengers holding connecting tickets or return tickets who request a refund shall be handled in accordance with the provisions of the first paragraph of this article.

(three) disabled revolutionary servicemen who request a refund shall be exempted from the refund.

(4) Passengers holding baby tickets are exempt from refund fees.

(5) A passenger holding an indefinite ticket who requests a refund shall go through the refund formalities at the original place of purchase within the validity period of the ticket.

(6) Passengers automatically terminate their travel at the stop of the flight, and the ticket price of the unused segment of the flight will not be refunded.

Article 23 When the flight is cancelled, advanced, delayed, the voyage is changed, or the carrier cannot provide the original seat, if the passenger requests a refund, the originating station shall refund all the tickets, and the stopping place shall refund all the tickets of the unused segment without charging a refund fee.

Article 24 If a passenger requests a refund due to illness, he/she needs to provide a certificate from the medical unit, and refund the ticket at the place of origin. If the ticket for the unused leg is refunded at the stop, no refund fee will be charged. If the entourage of a sick passenger requests a refund, it shall be handled in accordance with the provisions of the first paragraph of this article.

Chapter VIII Lost Tickets

Twenty-fifth passengers who lose their tickets shall apply in writing to the carrier or its sales agent for reporting the loss. The carrier shall not be liable if the ticket has been fraudulently used or refunded before the passenger applies for reporting the loss.

Article 26 If a fixed ticket is lost, the passenger shall provide proof to the carrier 1 hour before the scheduled departure time of the flight, and the carrier may reissue a new ticket for the flight. Re-issued tickets are not refundable.

Article 27 If an irregular ticket is lost, the passenger shall apply for reporting the loss after providing proof to the original ticket office in time, and the ticket office shall notify all relevant carriers in time. After verification, the ticket has not been fraudulently used or refunded, and the refund formalities shall be handled within 30 days after the ticket expires.

I hope I can help you. I'm from a domestic airline. Generally, you can mention the flight records within three days after the plane takes off, and you can also find the name, telephone number and ticket number of the place where the ticket was issued. If SIA's system is similar to our airline's, is it because SIA didn't provide you with accurate information when you called for consultation? In your case, you should go to the original ticket issuing place to report the loss. If the ticket is not returned by fraud, Singapore Airlines will refund you. However, it should be noted that there are some regulations on air tickets that cannot be refunded, and the refund fee that can be refunded is also different according to the situation, which is related to what kind of freight rate regulations you used at that time and the time to cancel the flight. Moreover, the longest validity period of air tickets is generally one year, so your air tickets will expire soon. Please contact Singapore Airlines as soon as possible within the validity period to see if there is any way.

Chapter VI Refund of Tickets

Article 21 If the passenger fails to complete part or all of the voyage within the validity period of the ticket due to the reasons of the carrier or the passenger, he may request a refund within the validity period of the ticket. Passengers who request a refund shall handle it with the "flight coupon", "passenger coupon" or the unused part of the ticket. Refund can only be handled at the ticket office of the carrier or its sales agent at the place where the ticket is issued, the origin of the flight and the end of the trip. The fare can only be refunded to the passenger or the payer of the ticket.

Twenty-second passengers who voluntarily refund their tickets shall provide their valid identity documents in addition to their valid tickets, and shall be handled in accordance with the following provisions.

(1) If a passenger requests a refund within 24 hours or 2 hours before the scheduled departure time of the flight, a refund fee of 10% of the passenger fare will be charged; Ask for a refund within two hours before the scheduled departure time of the flight, and charge a refund fee of 2% of the passenger fare. If you ask for a refund after the scheduled departure time of the flight, it will be treated as a missed flight.

(2) Passengers holding connecting tickets or return tickets who request a refund shall be handled in accordance with the provisions of the first paragraph of this article.

(three) disabled revolutionary servicemen who request a refund shall be exempted from the refund.

(4) Passengers holding baby tickets are exempt from refund fees.

(5) A passenger holding an indefinite ticket who requests a refund shall go through the refund formalities at the original place of purchase within the validity period of the ticket.

(6) Passengers automatically terminate their travel at the stop of the flight, and the ticket price of the unused segment of the flight will not be refunded.

Article 23 When the flight is cancelled, advanced, delayed, the voyage is changed, or the carrier cannot provide the original seat, if the passenger requests a refund, the originating station shall refund all the tickets, and the stopping place shall refund all the tickets of the unused segment without charging a refund fee.

Article 24 If a passenger requests a refund due to illness, he/she needs to provide a certificate from the medical unit, and refund the ticket at the place of origin. If the ticket for the unused leg is refunded at the stop, no refund fee will be charged. If the entourage of a sick passenger requests a refund, it shall be handled in accordance with the provisions of the first paragraph of this article.

Chapter VIII Lost Tickets

Twenty-fifth passengers who lose their tickets shall apply in writing to the carrier or its sales agent for reporting the loss. The carrier shall not be liable if the ticket has been fraudulently used or refunded before the passenger applies for reporting the loss.

Article 26 If a fixed ticket is lost, the passenger shall provide proof to the carrier 1 hour before the scheduled departure time of the flight, and the carrier may reissue a new ticket for the flight. Re-issued tickets are not refundable.

Article 27 If an irregular ticket is lost, the passenger shall apply for reporting the loss after providing proof to the original ticket office in time, and the ticket office shall notify all relevant carriers in time. After verification, the ticket has not been fraudulently used or refunded, and the refund formalities shall be handled within 30 days after the ticket expires.

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Find someone to write a certificate. Immigration can do it. Don't look at the above rules, just send something. This is society.

If you refund the ticket, you have to have something he tore off when he got on the plane to verify it ... upstairs, that's right. The Immigration Bureau can issue a certificate and blame it on the Immigration Bureau ... that is to say, the airport will not lose their face because they have delayed the entry formalities.