MTN is my worst nightmare

I took a home router 24months contract with MTN. The router has not worked since I received it in November 2025. I'm paying monthly instalments for services I'm not getting. I've been transferred from one department to another from 2025, now it's April 2026. I went to the MTN branch today with the router, the consultant there checked the router and confirmed that it's indeed not working, but the only solution he has for me is that I cancel the contract but they will charge me for the cancellation. I have never been this frustrated, had I read the MTN reviews before , I wouldn't have taken the router in the first place. Now I'm stuck with monthly instalments for services that I can't use 😩