PATHETIC SERVICE / NO RESPONSE

Hi called MTN since last week Thursday 17/03/2016 because there was data added on my account for almost R600 that i did not request, after speaking to several call center agents one lazier than the other to just call a supervisor, all i hear is the problem will be escalated, matter has still not been escalated, even called the head office, for a whole day they don't even answer their phones, every other phone call every other agent tells me a different story from 2-24h until i receive feedback, to 3-4 days, 3-5 days and 3-7 days don't really think they know what they are doing, eventually i spoke to a supervisor SHE PROMISED to give me feedback by Tuesday 22/03/2016, and guess what still nothing, so as i told them without proof that i requested that data i stopped my debit order and will not pay it until i have solid proof i called them.... WORST SERVICE EVER.