I had a bill that went to a collections department. The first time I tried to pay them, the payment was done wrong and thus, declined. I paid them again via another method and all was fine. Totally paid off. A week or so later, I got a refund from DE. I promptly called and asked what the check was for. They informed me that I had paid twice. I spend over 20 minutes on the phone explaining that I had not paid twice; the first payment did not go thru. Their employees INSISTED that I had. So, I figured that they new better than I, and perhaps the payment was going to be submitted again. So I cashed the check and didn't think anymore about it. Until I got a bill from another collection agency stating I owed the same amount. What kind of a company doesn't know when they've been paid? Especially when you call and try to point it out to them? This is their error, not mine. As much money as they have and they can't be big about it and let it go. Unbelievable!