MTN Credit control

So at around midday today I receive a first time call from 008311- MTN @12h01. I returned the call and spoke to a Mxolisi, a MTN credit clerk, who advised that because my split billing was in arrears, that they may have to suspend my service. I advised him that I contacted MTN some months back advising of a change in my banking details. I also told the MTN credit clerk that MTN must decide on its action after the threat to suspend my line.<br> After he checked the system advising that they have no such record of changed banking details, the clerk then asked me in a rather high handed and rude manner as to when I contacted MTN .<br> I reminded him that I was the customer he was talking to. Having other MTN contracts I asked that he check against the another account to which he rep**** that 'we are talking about this account' and continued rattling on. Then he proceeded to re-engage his brain and decided to check the alternate account at which point I decided that I did not have to talk to the clerk and cut the call.<br> I have proof of contact with MTN about my changed banking details .Clearly the much vaunted processes in MTN do not work. Get your act together MTN!