AVG Technologies Refusal to Issue Refund Newton North Carolina

In a few words, here it is:  In May of 2013, a cheque was erroneously paid to AVG for virus software, which our office did not use anymore.  Within a couple of days, the mistake was realized and we called the AVG offices immediately.  Unfortunately, the cheque we had sent them, in the amount of $696.99, had already been processed.  In retrospect, I should have called the bank and issued a stop-payment (at a cost of $25.00), but I thought that AVG would honour their promise of a refund.  They have not.  It is now nine months later, January 2014, and all I get are empty promises and the run-a-round.  One department passes it off on another.  After countless telephone calls (all of which are documented with names, date, time, etc.), leaving voicemails (of which I never get a reply call), and email communications, namely with Robert Bekemeier, "Customer Service Lead", my patience with them is exhausted.  They were given more than ample time and fair warning as to my next steps.   It might not do any good, but a complaint has been duly filed with the BBB.  Now this RipOffReport.  Next, whomever is the licensing authority for a software company.  Point is this.  Do not do business with AVG and tell everyone you know the same.  They are not to be trusted.  They are unethical and unprofessional.