I co sign for my son and his girlfriend for a place to live. myself and the landlorn had a verbal agreement that my name will come off the lease in six months. My son girlfriend moved out they didn't give a new rental agreement, My son fell on hard times and got behind on his rent over $7000.00, the landlord never inform me what was going on with my son. He say i owe the money because he never took my name off the rental agreement. he said we never had no such agreement to take my name off. but we did. what can i do. also my son been living their for (3) years. and his girlfrind is still on the rental agreement. they said she gave a 30 day notice.