Cell C- MAKING PROMISES THEY CAN'T KEEP!!

My contract ended on the 29th of February 2016, was under my mom's name. She wanted to upgrade the contract and did so on the 26th of February 2016, while I was just meant to go onto prepaid (easy, right?). In the process of porting her number from MTN to Cell C (which I believe now was a mistake, she should've stuck with MTN, WAY better customer care), my and her cellphone numbers for swopped. This means now that CURRENTLY her phone number is registered to my sim card, and my number is registered to her sim card. Which is very inconvenient, as you can imagine. She calls Cell C, they promise to sort it out within 2 working days (I think their 24-hours are more than a normal company's), mark it as 'urgent'; which I don't even think THEY take seriously! Since the 26th of Feb to this day, they STILL haven't sorted this mess out! All the promises they've made, gone to the wind. I called them probably 4 times in one week, each of their call centre agents promising to 'follow-up', saying that someone will call me that very day (HAHA) and saying all things to help me calm down, but alas, none of their promises were kept. Now they still want to charge me for putting the numbers back?!IRATE