1. Contact the credit card issuer as soon as possible, inform them of your situation, and ask to freeze the credit card account to avoid more losses.

2. If you have paid a certain fee, you can ask for a refund and provide relevant evidence, such as contracts and receipts, to the credit card issuer.

3. If you think you have been cheated, you can report to the local public security organ and provide relevant evidence, such as contracts, receipts, recordings, etc.