A year and counting value R30 242.36

Afternoon MTN you are now almost a year into not sorting out my account. YOU ARE R30 242 .36 IN ARREAS!!! REALLY I cancelled and paid the fees yet you did not cancel the accounts/ numbers. so now you are billing for ****. you are now causing me to have a bad credit record. due to your negligence. you changed your system and have promised me over and over to fix it yet nothing. this can not continue!!