Business Banking Zero Fees Account - Pathetic Service and False advertising

I opened up a business account with ABSA which advertised as no banking charges. This was fine for a few months then all of a sudden this year I started being charged every month. The account went into negative without me knowing. No commuication was sent to me stating that I will now start incurring a monthly fee. Also when the account went into negative, I was being charged additional fees for this. I then recevie a letter in the post (not a single email or telephonic call) a few months later to tell me that this account is in arrears and I need to pay the oustanding balance. After numerous attempts I failed to get this reviewed or written off. I settled all the negative balances and sent an email to my banker and the buisness banking unit which acknowledged by email. Guess what, account still not closed and now another negative amount trying to be debitted off my account. I give up!