North American Bancard unauthorized withdrawal from our business account. troy Michigan

On Oct.14,2015 an unauthorized and incorrect ACH deduction of $22,198.34 was made from our business checking account. On Nov. 3, 2015 a service charge of $392.89 was deducted, apparently for this same illegal tranasaction.  We became aware of this situation when we opened our checking account statement on Nov.7, 2015.

We have called North American Bancard numerous times and they say they are checking into it with their supervisors and with Global Depglobal Payments, we seem to be getting nowhere.