Services suspended - due to MTN app**** limit

I have been a MTN client for the last 15 years I reckon. My account was recently moved from Nashua Mobile to MTN. <br> I have always paid my account which is on contract by debit order without default.<br> Today, I lost cellphone reception and when I tried to make a call I get an error message that says \services have been suspended. Please contact provider"<br> I phoned MTN call centre where the message is \""Our services have been disrupted and the Call Centre is closed\"":<br> I e-mailed the customer care. The response I got was that I had reached my credit limit of R 446. I have never asked for a credit limit and have never been subject to a suspended account. My monthly bill is about 4-6 times the credit limit that has been arbitrarily imposed on my account. <br> What a load of absolutely nonsense - who applies a \""credit limit\"" of 1/5 of the client's average spend and how can a limit be app**** without any client consent? """