Mtn bad service

Mtn useless we took out a new home rooter contract, we didn't had it even long then suddenly there where no data available, the device said no internet. I though ok just leave it and wait for the new data, but nothing happent so I phoned Mtn West gate they said we must bring the rooter in for check up,we did that then they,said there is nothing wrong with it, we went back home check it again, still it was doing the same thing. My husband went back then they said we must phone supersonic and sort it out with them, we couldn't understand why, because we didn't have a contract with supersonic it didn't make sense, but I phoned them after hours of holding on to get threw to a consultant, they said there is nothing on the system we must phone Mtn, so once again they sent us from piller to post. I phoned Mnt again and, said we rather want to cancel the contract, because the rooter is not working nobody can help us and in the meanwhile we must pay for something that's not working. After waiting more than a week trying to speak to someone to cancel the contract they said we must pay a cancelation fee. Ok so why must we pay a cancelation fee for there product that's not working and nobody seems to care to assist us to fix the problem. Bad bad service!!!!