This same company has now done this twice to me and in combination with Tele-Check caused my checks to be declined. I have over-draft protection on ALL my checking accounts, and have NEVER bounced a check. And these were Electronic Transfers, which by Federal Law are supposed to happen immediately or be declined.
This purchase at Sams Club online went through and I received the items, with NO notice of any issue. Then over a month later, I got the notice from TRS Recovery Services of an "unpaid electronic fund transfer", which is totally illegal.
If you don't pay, they report a collection on your credit and send more threatening notices that seem to be from a District Attorney in the city/state you live in (which is also mis-representation, as I contacted the DA and they don't support it).
I hope there are lawyers out there who have had success fighting this fraudulent scum, because I will be using one.