MTN complaint: No able to assist with cancellation

I went to the rosebank store around the 23rd May to get the home router.
I was advised that I had coverage for the devise proposed. I took it home and it was not connecting, upon contacting the store, I was told to call customer care and get the apn settings. I did that and the next day I was able to connect. The connection was slow and called the gentleman that assisted me and he advised to call customer care, which they did a reset on my devise. The speed kept being slow and customer care kept resetting the devise.

8 days later I went to the store and another agent checked my address and she advised that there was no coverage on the address I gave them. I then tried to cancel and I was told the cool off period has lapsed. I have been trying to get the contract sorted since then.

In october or beginning of november I spoke to a gentleman at the coverage department and he was able to that I do not have coverage at my address and a cancellation letter was requested. I received the letter at the begining of december and went to the store to get the device returned and to get a reference number for my cancellation so that the retentions department can cancel my contract.

The rosebank store is not able to assist with the reference number as they say they do not know how to get it. I have been calling retentions ever since and I am told they can’t assist as the store is supposed to give me that reference number.

I spoke to another agent on the 16th march and she advised that I go back to the store and collect my devise and request dsv to collect it from my address. DSV is not able to assist as their request to collect was declined by mtn stating that I got the devise from the store, and I need to go back to the store and ask for assistance.

I have been sending the device since December and no 1 is able to assist me.

Please assist with requesting a discount on my subscription and also please assist with cancellation.