MTN contract gone south

I curse the day i took out a cellphone and data sim contract with my MTN. They first delivered a wrong phone, i took it back within few hours of delivery and its been 3 months to date with me trying to cancel the contract for a phone that i never used while they are busy deducting my money.

I have to call in time and again and m always told they waiting for feedback from where i don't know. I will never ever recommend anyone to MTN.

In few days they will be taking another R400 from account but dololo service. I am out of options as to where to run to now, i have dealt with poor service before but this one take a CROWN ??