DESPICABLE SERVICE!!!!!!!!!

I AM ABSOLUTELY DISGUSTED at the service I have received from MTN these last couple of months. The business debited ten times more than the usual debit order amount on the 26th of June 2020. I called to inquire about the debit and I was told they have created a ticket it will be investigated. I then later that day went to the branch hoping to get better service face to face and the consultant logged a ticket and was told I will get feedback in 72 hours. I called back two weeks later and I was told the ticket was not attended to they will escalate the matter. Another two weeks passed and I called and asked to speak to the manager, because the consultant I spoke to was very dismissive and just said to me "you have been scheduled to get your refund in 21 working days" I was not satisfied with their attitude and the way the feedback was provided hence I asked for the manager I spoke to Oletta Samuels and I asked her to fast track the process of getting my money and she said she has just sent an email to her manager to see how they can assists because the service has been slow. Of course nothing gets done, I call back a 3 weeks later later and what do you know, there is no note on the system that I need to get my refund. There is no record that I spoke to a manager. Oletta has been evading me for months now. I called one Saturday and spoke to another manager Marvin Pillay, after waiting for an hour on the line to get a manager and he claimed he called Oletta and she said she will call me on Sunday when she comes to work. It is October, this was in July. went on twitter, to get their attention, and they have been waiting for the billing department to investigate since August. IT'S CLEAR THERE IS NO REASON WHY YOU TOOK MY MONEY, NOW STOP LOOKING FOR LOOPHOLES AND REFUND ME MY MONEY!!!!!!!!!!!!!!!!!!!