CellC contracts

I have taken out a contract with cellc in October 2017. This contract was for a mobile router and 20GB data SIM card, I only received a SIM card. I called numerous times to ask what’s happening with my router because I am getting billed every month for it yet I can’t use the SIM card with out a router. They told me in November it will come and it still didn’t. I called a lady name Trisha from cellc who took out the contract for me, she said she would call me back but nothing so I decided not to pay them because how can I get billed for a product which I can’t use. In December I called to cancel it and they agent told me that it was canceled but in January 2018 I got billed, February I got billed now they want to hand me over to lawyers. I explained to the guy about my situation and he didn’t give a damn.