Poor service all around

I phoned two weeks ago to cancel my contract due to poor network coverage for which I have a letter from the networks department to cancel the contract due to this poor signal. Two weeks later I am still waiting for cancellations to call me back. I was in a car accident 2 weeks ago and when I tried to call for emergency support, all I got was network unavailable. MTN has poor signal, poor service and even when you caught in an emergency then you can't get help. In my opinion, I strongly suggest staying away from MTN as the only thing they can do competently is debit your account each month