Unhappy Client!!!

I have been a customer of MTN for many years and have 3 lines with then and was happy with their service until they changed there billing dates. The only point of contact is the call centre and they cannot help me, I have tried the Head Office and the reception can't put me through to someone in management. Because of there new billing dates it looks like I am always in arrears and they keep on cutting my lines, if I don't get the help I need I will move away from MTN and refer everyone I know elsewhere.

Your very unhappy client.