What should I do if the property refuses and delays the handover after the elevator is completed and accepted?

1 Stop using the product, 2. Inform the property that the warranty period starts from the date when the certificate is issued by the special inspection office, and the elevator will not be accepted. First, it can't be used. Second, the warranty period is still counted. Third, you may not pay it when they want to collect it! ! ! Tell them they are losers. But you must stop using it, or you must show that you will stop the elevator if you don't accept it.