MTN providing bad service

On the 3rd of July 2015 I renewed my wife's MTN contract which includes 100 free minutes, 200 sms's and 300mb data. On Tuesday the 21st only the free minutes were received since she got the phone. So we phoned MTN and they said on the system it shows that the contract states only the 100 free minutes whilst i was having the contract in front of me. We tried everyday and the call centre does not answer/ drop the calls. So yesterday (Sunday 26th) at about 10 am I phoned MTN again and the lady told me that the data and sms's were not activated and she activated it. It is now Monday the 27th and still no data. Why do I have to pay for something that i do not get? The cellphone number is ***