MTN SA SERVICE VERY VERY BAD , THEY OVERCHARGED THEIR CUSTOMERS

MTN SA -Your service is so disgusting , you debit the amount of over 300 from my bank of which I don't Know where you are getting it from, I have been trying to cancel my other contract with you and getting my money back for the past 10 days with NO luck. Even your "CHAMPIONS' cannot assist , I have been transferred from one person / department to another. I have sent out my bank statement but am not getting help. I am so DONE , I want NOTHING to do with MTN SA. I will switch to your competitors......