Poor customer service by MTN service provider

good day I have done a cellphone contract October 2016 at Johannesburg Park Station , on the contract they say I will receive 100 SMS, 100MB and 50 minutes and since then am not getting my 100 SMS, I went to park station they refer me to MTN call centre, I call the number they refer me back to park station and it was April 2017 and the manager was very rude to me, after that I tried to call customer service they keep on saying that they will log a call with the SMS department I will receive the reference number which I didn't receive by then, I spoke to Mapule today 02 October 2017 she says that all the people that was saying they will call me back there were just lying to me there is no way that they can call me there were suppose to give me a reference number, which she did gave it to me and say that I have to call after 3 to 7 days, kindly help me am frustrated am paying for full service were as am getting half and now is almost a year