Bad experience with MTN service providers

During November 2017 I received the offer to renew my contract which was about to end on February 2018. Some more mobile was the service provider and they promised me with the hand set and R100 airtime per month. They never delivered on their promise and as from December I have calling some more mobile and every time I call they promised to come back to me which they never did. I end up calling MTN in December 2017 to cancel the contract and they told me they are going to charge me early termination fee as the contract will expire in February 2018. When I called MTN in February 2018 to cancel the contract they said the contract has been renewed and It will expire in June 2019. I told them their service provider never delivered the handset and I was not given the opportunity which I believe is 7 days to go through the documents and if I am not happy to cancel the contract instead they have renewed the contract without my knowledge as I was still waiting for the delivery of a handset and legal documents. Up until today there is no solution to this problem,