Extremely Poor Service

I am disgusted in the poor service received by MTN with whom I have been a loyal customer for a number of years. On Monday 12 March my service was discontinued without warning. I visited the MTN outlet at K90 in Boksburg and I was informed that I was in arrears on my account. The lady in the store reconnected my service and I accessed my bank account and upon further investigation there were two payments made and which did not reflect on my MTN account. These were made on 20 Feb & 2 Mar 2018. I immediately e-mailed the statements to the lady in the store and who undertook to send it to the MTN accounts dept in order to be rectified. The lady in store also provided me with the e-mail address of the credit controller in charge of my account Sandra Honwane and upon my return at the office I also sent my bank statement to her. I have since this date received a number of SMS's from MTN informing me that my service will be disabled as a result of my account being in arrears. I once again visited the MTN store at the K90 on Monday 19 Mar and informed them of the SMS's and to enquire whether my query had been attended to. I once again provided a copy of my bank statement reflecting my payments and demanded this be forwarded to MTN accounts as my wife is in New Zealand and I was concerned that my service will be suspended and I would therefore have no contact with my wife. The lady the forwarded the e-mail and I was copied in the mail. This morning , Tuesday 20 Mar I was in a Whatsapp conversation with my wife during which my service was ONCE AGAIN suspended despite my efforts, time off work and fuel expenses to sort out my account. I utterly despise the manner in which I have been treated in this matter and if I would have a choice I would cancel my agreement with MTN immediately !!!!!!!!!!!!!!!