To become a guarantor, there must be a written document of the guarantor's consent to guarantee, with the words of agreeing to guarantee the loan amount and term for the lender, autographed and signed (handprint). In addition, a guarantee contract must be signed with the bank. You don't know now, even if you have to bear the guarantee responsibility, you must have the relevant dunning notice, and you will take measures if you refuse. The court mishandled the problem (if the court informed the bank to freeze it). In short, you don't have to panic, ask the bank and the court for details before dealing with it.