The embassy refused to withdraw the invitation?

If your invitation letter is rejected by the embassy, it may be because the embassy thinks that your request does not meet the relevant regulations or is unreasonable. In this case, you can consider the following suggestions:

1. Understand the reasons for rejection: You can ask the embassy the specific reasons for rejecting your request. This can help you better understand the problem and provide more supporting materials or explanations to support your request.

2. Provide more evidence: If you think it is unfair for the embassy to refuse your request, you can provide more evidence or explanations to prove that your request is reasonable. For example, you can provide evidence of contact with the inviter to prove that your invitation is true and effective.

3. Ask for help: If you can't solve the problem through your own efforts, you can ask for help from a professional organization. For example, you can consult a lawyer or a professional immigration agency and seek their help.

Please note that the regulations of each country and region may be different, so it is best to read the relevant regulations carefully and understand the requirements before submitting the request to the embassy.