My account has been mishandled since Nashuaclosur

I am very disappointed with MTN billing department. My account was transferred from Nashua Mobile. That was the beginning of my problem. 1st- MTN has been billing me for 300MB DATA BUNDLE which has never been provisioned on my number.I was paying for the service monthly that I never received. 2nd I was double debited at some stage and was told it was a mistake\ that I will get a credit which I was ok with.Today my line was suspended because I have arrears for about R24 (as per call centre confirmation). I have a debit order on my account and expect MTN to debit if I owe them anything and not lock my line. I have phoned MTN several times until I got tired of getting reference numbers and my problem not sorted. How *********** can a staff be on mishandling a client's account for invoice & statements? I never want to phone MTN call centre because the "service is horrible & staff lack knowledge except issuing REF Numbers. Herewith a list of REFS I got to peruse MTN: ***"