1, call the police and report: I borrowed my sister's credit card and swiped out100000, but I was cheated by the pig-killing plate. I need to report the case to the local public security organ immediately, and provide detailed incident and relevant evidence, such as bank transaction records and communication records. The police will investigate and try their best to help you recover the cheated funds.

2. Contact the credit card company: contact the issuing bank or the credit card company as soon as possible, report the large cash withdrawal of the credit card to them, and request to temporarily freeze the credit card. At the same time, provide relevant information reported by the police, strengthen the integrity of complaint materials, and improve the probability of recovering losses.