USELESS MTN/ WILL MOVE TO VODACOM ASAP

Useless Customer Service. I have been trying to update my payment methods since November Last Year. NO ONE can assist. I have gone to MTN Morningside call center at the end of every month, called 135 on several occasions and once my payment method is uptated it is then reverted back at the end of the month. Debits do not go through and I AM FORCED to go to the shop every month to pay my bills. MTN even changed my roaming settings accidentally and on a business trip to Nigeria my roaming service had been completely deactivated without my request. Im up to date with all my payments and will soon switch to VODACOM. In the morningside CS centre one of the managers gave me his number and asked to whatsup him when in need. I have been whatsupping him for 2 days and he DOES NOT ANSWER!!!! MTN you are uselessss, USELESSSS!!!!!