Poor service and no feedback.

I recently accepted an additional data contract telephonically. She called on the 11 February and explained the options I was busy so I told her if I am interested I will go to a store, she then mentioned if I took the contract with her I will not pay sim and connection fee. I told her again I was busy and am unable to accept anything and requested she called me the next day, she did. I accepted the contract and confirmed the billing amount to be prorated. When I finally received my sim I calculated the percentage of prorata data I received compared to the billing amount and it was about R120 more. I sent a message on messenger to mtn to query the difference on the 25 February (I received the sim on 24) the only response I get from them is we are awaiting for the recording from Rewardsco and they apologized. I literally received the same response 3 times after I requested for feedback. They seem to have a passive approach. What would happen if they took 1 or 2 months to supply the recording? Was I supposed to pay now and hope to get my money back? Employee no 8073 spoke to Vaneshree. I received a service rating call and told them I was unable to rate as I don't want to discredit the consultant if it was not her fault for a billing issue. But am not sure if I was misinformed. Poor customer service and worse attitude from the social media escalation team! Really regret taking this contract. I now have 5 contracts with you!