Bad service

Extremely bad service after being a client for over 29 years. I have been sent from pillar to post trying to resolve the account handed over to the lawyers. when the layers contacted me, i had already PAID the account. They referred me to FNB, and from that i went to recoveries, back to MS Mahomed...left messages and she never phoned me back. i later told by a "Gordon that my business account is closed" how so without a NOTICE and i am waiting for funds that needs to paid into that account.... i have been traying from Saturday the 21st FEB, trying to resolve this matter and no answers, calls not returned... and lawyers as don't know what to do as FNB was paid before they could deal with my matter???? I have ALL my ACCOUNTS with FNB and have been a loyal client and i have never used other banks...but i am considering closing all my accounts and go to other bankx