Please give me feedback on my account status.

Mtn is just a ****. They advertised the contract deal the consultant called me and we agreed on the contract which was a mobile rooter which comes with 150 GB of data every month. The rooter was delivered along with the sim card. The sim card was never registered or activated. I tried calling and they kept sending me from one department to another. Only to find out later that they made a mistake of sending me a mobile rooter, while on their side they made it a home rooter, which is why I was unable to activate or receive any data from their side. However they kept of debiting from my bank, why they not solving the problem. Instead I was told it was not MTN it was another company working under MTN, something I really don't understand till today. I was asked to pay R2139. 99 in order to cancel the contract. I payed the amount. Later on I'm receiving a message that I still have to pay another R1236. For what I still not not. What I know is that I donated my money to MTN for receiving nothing from them.