Bad service and the worst customer care ever

I took out a contract online in September for a Lte package that has a router, and it was delivered to my word address. It was working well, and it is location locked. On the 20th of December 2025, I relocated and contacted Mtn to provide my new address so I could continue using the router. To my surprise, I was advised that there is no coverage for my current location on fixed contracts, but coverage is available for a month to month contract. ( This doesn't make sense to me because it's the same location and same service provider) I was advised to either take the month to month (which costs more) or cancel the contract. I opted for cancelation. Then I was advised to take the router to any mtn store and cancel there, on the 24th I went to Mtn store in Jabulani mall and they refused to assist me they said they don't deal with any online purchases. I called customer care while in store, and they advised that a call has been logged someone will contact me to arrange the date and time of when they will come to collect the router and cancel the contract. It is now the 5th of January and no has made contact I called customer care again today and spoke to Sinazo and she was no help at all she only gave me a number to call said that's the department that deals with sales they should be able to help with canceling. I called the number *** as provided but it doesn't go through.

I am sitting here with a router I can't use because it's location locked but they will run a debit order for it and take my money!

Clearly there is no communication/ standard process within MTN and the stores because I don't understand while I am told different things by different employees on the same matter. What must I do now with this router I can't use but I am expected to pay for it.