Very poor service

I was over charged two months in a row, when i contacted MTN the consultant told me its because i am in arrears with my account . I didn't pay my account in August. My bank statements prove otherwise. I questioned why on the phone app there was no indication that i was in arrears and why MTN waited from August to deduct the monies now and why was my account not suspended for non payment, she could not answer any of these questioned but requested my bank statement which i sent through. No feed back to date. Please not i am aware of other mtn clients including my wife who was overcharged. Seems like MTN is in financial difficulties and is taking monies from people to assist them. I upgraded in November still not getting my correct data, excuse is ********** !!!