MTN HORRIBLE SERVICE!

Can MTN Accounts get their business right, I’ve never received such horrible service ever. I’ve been with MTN for years and had 4 lines with them, I cancelled my lines every time my contract ends. I called in May/June to cancel the numbers that were receiving airtime and data but weren’t in use and it was pointless being charged for units I never used. A lady by the name of Wenzi went and cancelled all my lines even the one that is use after I specifically told her I’m leaving that one line because it’s ending in October and that I will leave it on til such time. She went and captured her own things and billed me close to 3000 and I called to ask about this amount and was told it’s an early termination fee. I was assisted by another lady, who confirmed the misunderstanding and told me to reverse my money back and deposit what’s due for only one line that’s ending in October..I did that and the following month, I’m being debited another amount, which wasn’t confirmed on telephone..When I mail them, they can’t even tell me what’s that amount for, they mail me telling me of outstanding amounts I’m owing and I keep asking them to break it down and tell me what’s it for and no one care to mail me back and tell..I can’t owe you when there are always funds in my account, when they don’t make sense, I can’t pay for something that’s even unexplainable... So sick of MTN