MTN CONTRACT UPGRADED AND CREDIT LIMIT REDUCED

I went in to upgrade my contract on Monday. Upgrade processed and approved. My expiring contract was a MTN500 Package for which I paid R649 per month and never exceeded the limits.<br> The new contract to cost R829 per month.<br> I then received an sms to say that my credit limit had been reduced to R657.00.<br> Firstly I did not know there was a credit limit. Secondly it was R3 159. How is it now reduced and how can it be reduced to less than I have to pay for the contract?<br> I have spoken to the call centre, a supervisor in credit management, the store ans no one can assist.<br> All I am told is that ITC Vetting say that is what I can afford.<br> What bull ****!<br> I am now being charged R829 per month plus for calls/data etc!!??<br> Perhaps someone at MTN will read this and try and assist?<br>