Cell c poor service and false agreement

A cell c agent called me and offered me a phone contract but when she checked my score was low.She went on to say since your score is low I'm going to offer u 2 months sim contract just to up my score then she will call me after 2 months to offer me a phone contract,I agreed bare in mind I only know that they gonna debit for only two months. First debit order came they debited more than what I agreed on.I called the cell c customer service to Inquire about the debit orders.It got worse from me agreeing to a 2 months now I found out that the contract is 24 months.They logged a case,gave me a case number.So apparently the investigation was suppose to take 7 to 14 working day but it took almost 2 month.After they have concluded with their investigation.They called me,they couldn't get ahold of me because I was at work.I called the customer service again to follow up on the case.On their system they say they called me and couldn't get ahold of me but the feedback about the case is not there. Even today I didn't get the feedback,they couldn't even send me an email giving me a feedback about the case. I called the customer service,asked them to cancel the contract. They told me that I have to pay R1500 for me to cancel the contract. I asked them how because I don't sign up a 24 months contract. They not even willing to help I'm stuck with something I didn't sign up for. I'm really disappointed at cell c agents and their customer service.