North American Bancard NA Bankcard Debited Bank Account without authorization Internet

Debited my bank account for a processing machine that I had purchased through one of their authorized representatives.  I sent them a copy of the cashed check that I used to pay for the machine, they closed my account with out any problems, but now, 4 months later, they took $1,100.00 out of my checking account.  They stated the fee I paid was a programming and set up fee.  I told them look at the copy of the check I sent them and see what was written in the "For" part.  They said because it was written by me, it doesn't count.  WHAT?  I always write that part of the check for my records and now it doesn't count.  The company I went through took the check knowing I was purchasing the machine.  I sent the machine back today via UPS and called with the tracking number.  They stated that once the receive the machine, they will refund my money, but it could take 3-5 business days.  I don't know of anyone that can afford this right now.  No warning, no nothing, they just took the money.  BEWARE.