TSYS Merchant Solutions False information trying to close account Omaha Nebraska

I have spent a year trying to either put my account on hold or close it.  I have called over a 12 times.  I have been told something different every time.  I have received 1 response out of approx. 15 emails to customer service.  I have been told no more chardges would hit my account about 6-7 different times.  I have waited on hold over 3 hours during these calls, last was waiting 15 minutes for a supervisor which never did come on the line.  After I thought I was done I received a chargeback on a card reader that I was told was credited due to all the trouble, etc. etc.  Last, I returned the card reader, provided proof of delivery and was told they had not record of it two weeks later.  This is one of the worst companies I have ever dealt with.  FYI - I was a customer of theirs for approx. 3 years and this is how you are treated when you leave.