first, report the loss of your credit card by phone, so that others can't use it again;

then continue to report to 11, and get the evidence of the report and record anyway. Then call the service hotline of your credit card, explain the situation clearly, fax your evidence to the bank, freeze the money you have swiped, at least don't charge you a penalty interest.

The key depends on the ability to toss about activities. It's none of your business if you don't worry about others. No more, it's almost 315. Call the news media, migrant workers+credit card fraud, which is enough to attract attention.