Transworld Systems Inc. Debt Collection Complaint

Transworld Systems Inc. Debt collection department,

Other (i.e. phone, health club, etc.) Cont'd attempts collect debt not owed Debt was paid Texas

We owed - - dollars, we sent them the payment and the check was cashed. The collection company TRANSWORLD SYSTEMS INC, is still sending the collection letters. I tried to contact them by phone and their web site and they do not respond. This is an abuse and I am afraid that they can ruin my credit for something I have already paid