Accounts department in total confusion

I have been informed today that my account is in arrears for December2020 this news comes 5 months later (now in May 2021) after I have visited a store and called every month to find out my balance and paid without skipping a payment for 15 odd years. I have also requested that all my numbers be consolidated to one account and I was assured they were all on one account but I still receive 2 accounts every month. Every month my phones are cut off and i have requested that all debit orders be cancelled as I am paying cash, but still I am being charged debit order fees. Could somebody please sort out this mess on my account asap. There seems to be confusion as MTN staff are unable to do basic allocation and charges are then just added as they wish. I have sent proof of payment various times but nothing is done. I am furious as this takes up a lot of my time and every month I am given a different reason for my phones being cut off.