Not receiving my 2 contracts data and airtime

Mtn has a very disgusting service - my mom bought an iPhone 7 in June, Firstly she bought R30 airtime after her 30 gb depleted and her whole airtime was taken away - she contacted your call center they told her she had subscribed to certain sites and she must deal a certain USSD NUMBER TO cancel these stupid subscriptions but she recently bought the phone never subscribed to anything and she was never reimbursed her airtime but it's their fault for selling her a recycled number - she's even receiving stupid debt call for the previous owner of the sim card, plus this month on the 14th she was supposed to receive her data and she still hasn't received it - we called yall call centre 3 times this week the last consultant promised us that he'll forward the complaints to his manager and it's been promise after another, it's very frustrating coz we not getting valued as their paying customer. Another thing she also has a contract with yall with a phone she bought in December an LG K4 she never received her data in February and yall been calling ever since even this month no data received dololo days. iPhone number is ********** 657 LG k4 number is ********** 472. Kindly contact Hazel Javu at ********** 285