Vodacom Fibre horrid service

Horrible service, I struggled to get connected on my vodacom fibre to a point of requesting a cancellation, now I am being told I need to pay over R1600 to cancel even though when I contacted vodacom to get the fibre it was on a monthly basis, not a yearly contract, now they say the amount is for the router they provided, which never worked by the way, so now I am receiving warning letters from vodacom to pay for a router that does not work.

Horrible and despicable behaviour, seriously not impressed.