At the end of a lease from an apt . when my son was in college, balance was suppose to be paid by all tenants. I paid my sons part and XXXX other other men paid their part but XXXX of the boys did not pay his part and it is showing up on our credit because the lease was signed by all XXXX guys. The guy refused to pay the difference and it has been sitting as a bad debt on my credit even though the collection agency agrees that they show that it is owed by the XXXX party but they want me to pay his debt to clear my credit.