MTN does not want to refund

Hello Peter. In February 2019, I received a call from CCI on behalf of MTN. The agent wanted me to upgrade my data contract with MTN. He said I was going to get a mordem and a card for a discounted price of R99 per month for 24 months and that the package was going to be delivered within 7 days. I waited for my parcel but it did not come yet MTN was charging me for the service. The worst part of it is that they were charging me R139-00 instead of the agreed R99-00. I contacted MTN and they gave me CCI number *** and the consultant that I spoke to referred me back to MTN. I contacted both companies several times but the mordem was never delivered up until I decided to end my contract with MTN because I was not getting any assistance. When I ended my contract I requested for the refund of the premiums that I had already paid and they promised to pay me back within few days. After some days I contacted MTN again and they came up with a excuse which I accepted. After that they kept telling me different excuses and giving me false promises, sending me from one department to another. They kept giving me reference numbers for the calls that I made. Up until now that refund has never been paid and I am tired of the *********** MTN consultants who do not even bother to give feedback when a complaint is lodged. I would advise people to stay away form this company it has terrible customer service.