Call recordings not made available as promised

I took out a data contract but the agent never informed me that this would increase the Voice rate, now MTN won't give me the call recording to the sales pitch. To make matters worse, upon renewal I was short changed again, we agreed on 4 gigs of data but I was only given 2. I complained for 3 months without any response then requested for the contract to be cancelled. Now they have handed me over because I refused to pay cancellation fee to a contract they bridged. They are just a bunch of bullies as far as I am concerned.