MTN HOME ROUTER - **** OR JUST POOR CUSTOMER SERVICE?

I have been trying to cancel my MTN router contract for three months now with no success, and I am being billed for something that I do not use, nor have any interest in using anymore. I app**** for the Home Internet LTE router, month-to-month contract on January 4 this year. I paid R481.93 upon completion of my registration and received it a few days later. The problem began when I tried to RICA the SIM card and received a message that it was successful but upon using it, it kept saying the SIM card was 'RICA BARRED'. This continued for the entire week and when I tried to call customer "care" they said I must wait a few days - it's April now, and I am still waiting. Furthermore, I went to the MTN store to try and sort this out and all I was told was that RICA is having technical issues, they did try to RICA the SIM for me but it still did not work. I then told them to cancel the contract and to let me return the router to which they rep**** that they can't since I did it online. I must contact them online and tell them to collect it. I did that only to be told by the lady assisting me that she also cannot cancel it over the phone, I have to go back to the branch and cancel it, now who looks like an idiot going up and down? To further add insult to the experience I have had, I am now being billed for this router that I never once got to use. On the 4th of April MTN tried to debit an amount of R296.36 - which I never approved. On top of that there is now a stop order on my account for this amount and I received a message saying I am owing R307.89. I have been trying to contact the call center since Friday but have been sent from pillar to post, it has become completely frustrating. I cannot take time off work again and go to the branch just to be told they cannot assist me. I just want them to fetch their router and remove the stop order on my account. I am not going to be paying any more money for something that I never used.