Payment issues never resolved

Appalling service by MTN South Africa In September I changed my bank and provided them with updated debit order information. Every month since then I have received an SMS telling me that my debit order has failed. I have called the call centre each time, confirmed the banking details are correct and paid the outstanding balance plus penalties for the failed debit order (that should never have been charged as this is THEIR error) only to find that this fails again the next month. #*** no wonder they are in trouble. Find another service provider