Account Disconnected without my approval

on the 12th of September I contacted MTN as my other number was disconnected,(061). I was sent from pillar to post as no one could tell me why my number was disconnected. I have two devices which are both on the same contact, the one number (061) was disconnected without my consent and till this day no on could explain to me why. when I initially asked why it was disconnected I was told that a call was logged but till this day no one has bothered to assist. I have been promised to be contact back numerous times and till now no phone call.I then had to call MTN four time a day from the 12th to the 15th of September 2017 in order for my account to be reactivated. I was also told that I need to go RICA my account as it was de-actived in order for the reactivation to take place. I refused as I NEVER requested for the account to be disconnected. The account has now been connected . I called again on the 17th following up on who deactivated my account without my consent and who requested for the account to be cancelled, I was told I will receive a call and till now nothing. Today a call was made to MTN regarding my statement as it reflects an amount of R9917.58 which is to be billed on my account, was told it includes a cancellation fee in which the account is not cancelled and I never requested for the account to be cancelled, this means my debit orders are going to bounce, the team leader by the name of Thandi Ndebele advised me to do a reversal, I advised her my account should not even be billed for that amount in the first place and its not my job to do a reversal. she was ****y and was not behaving as a team leader who was interested in speaking to the client or assisting the client. I then asked her if my debit orders come back as unpaid who well be responsible for the fees chargers that I will incur, she told me I need to send her my banking details. this is the worst service ever received from MTN and the team leader is unprofessional. I have requested for a call back and till now I have not received it

I need to know today who cancelled my other number and who gave them authority, since that was not authorized by me that means it was done **********ly and action needs to be taken .

I will be awaiting for your feedback