6GB data bundle for R99 p.m. on data only SIMS not so much R99 a month

<p>I've been a MTN contract customer for years and on May 2016 I received an SMS from Mtn for their new data only sim(6GB data bundle for R99 p.m. on data only SIMS. Available at MTN Stores only)so I decided to get me a second contact from MTN.So after the first month I received my bill on my new data only sim and it was over R300 and went to my mtn shop to hear what was going on.They said that there was a problem with my contract and they will fix it within a week and till this day nothing has been fixed.I still get charged over R300 a month for a R99 a month sim only.When I go to the shop for help help they tell me head office must fix it and when I call head office they tell me its a shop promo and the shop must fix it?So nobody is willing to fix this and I feel thmonthmonth?!?!To this day they still send out the SMS for the promo(6GB data bundle for R99 p.m. on data only SIMS. Available at MTN Stores only)and I saved the SMS on my phone.How can you apply for a R99 a month sim and get charged over R300 a month,I will be forced to seek legal assistance if this matter does not get resolved as my name is also now bad with the credit association.Ps I also logged complaints at MTN but there is also no response.</p>