on nov. 6, 2006 we gave a credit card # to a salesman who ordered window shutters for our condo in pompano beach, fl. and wrote the number on the contract. however,before he left the meeting with us , we had him change the charge to another credit card and he crossed out the first # and recorded the new one on the contract of which the charge went through. subsequently, two payments were made throughout the install of which we paid by personal check. when they requested final payment, we were not satisfied with the final install and requested their return to correct. after serveral conversations and no visit by the installer, we cancelled the card that was used for the deposit. we found on july,2007 a charge on the crossed out credit card # for the balance. apparantly, the salesman copy did not fully erase the #. we notified in writing the card co. and they reversed the charge, investigated and then reinstated the charge in september. we gave them all documents advising we never authorized the card to be used and no previous payments were made with that card to that contractor. our follow ups went unanswered with the card co. and collection agents. we now are summoned to special civil in october. the work was never completed correctly.can we countersue and do you think that is a wise choice? thanks, keith