Bad service and Incorrect billing from MTN

I would like to lodge a complaint WRT the service, delays and mistakes made my MTN that has now impacted my phone line. MTN Morningside loaded 10gigs of data on my contact number without any consent or request. When this was queried , i was told that it was resolved . Feb 26th i then received a message with reference number *** confirming that the query was resolved and subsequently the line was opened, three days later the line was suspended again due to the account being over due by the cost of these 10 gigs of data. I have tried to speak to branch manager Sandra and another gentlemen by the name of Masola and i have received no joy or action from these employees! I paid my account for the amount that was due and i am being billed and charged for data that i didnt ask for and that was loaded to my phone without request or consent. There has been no detailed investigation or permanent resolution to this issue and I am going to complain to Carte blanche and every other media platform because MTN is known for their misinformed billing and use of data and airtime in SA. If this matter cannot be resolved then I want this contract cancelled and MTN can have their data and phone back but I cannot deal with having a suspended contract every three days. This is not normal business practice , nobody is willing to help or find a resolution this. I have wasted airtime and petrol driving up and down to Morningside brand and calling head office with no joy. This has happened on various account where billing is incorrect and also data was loaded incorrect , so why i am being charged for MTN's mistake.I am going to lodge a complaint with the National complaints commission because this matter has been recurring with MTN and needs to be taken to the highest level. This matter needs urgent attention