Give you 5000 without knowing it? Too good to be true. Unlikely, right? If it's really like what you said, then call customer service as soon as possible, explain the situation to the loan platform and see what's going on. If the other party insists that it is your loan and fails to pay it back within the time limit, you can only call the police. Go to the local public security organ to explain the situation, ask the public security to contact them for you, and then ask them to produce evidence to prove that you do have a loan.