Applied Merchant Systems, Inc. AMS pulling money out of our account without support Chicago, Illinois

I posted yesterday that Applied Merchant Systems refused to send funds from a transaction with a client. After being given two options, AMS removed the option that proved it was a valid transaction and insisted on us reversing the charge. We reversed and got a check from the client. As mentioned earlier, AMS charged a transaction fee to us. Today, they processed the reversal of the charge. So they held the funds initially, but didn't process the reversal against the held funds...they reversed it against our account. The initial charge was $6000 and the fees that they are refusing to reverse (both initial charge then forced reversal) will be $600. Do not use this company!