Hello, you said this situation may be someone else's loan to leave a phone number mistakenly left as your home phone, you do not have to worry. The reason is that it's not up to you to decide whether or not you're going to be responsible for repaying the loan, it's up to you to decide whether or not you're going to be responsible for repaying the loan. If you and your family have not signed any Loan Contract, how can you be liable for default? If the other party calls you again, you can ask the other party to verify whether it is a typo, you have not signed, in the law will not bear any responsibility.