Incorrect billing since upgrade of contract

Hi.<br> <br> I went for an upgrade as my contract was coming to an end. I was waiting in queue for my ticket number to be called. A number was called but no one got up, so the next number was called and it was my ticket number. Before I could walk to the counter, the other person suddenly woke up and noticed her number was called. So in order not to cause a commotion, another consultant helped me. Since then, my contract has been a total mess. They upgraded me to My MTNCHOICE 100, which I asked for. But at the same time they also added 300mb data 200 sms bundle, which the MTNCHOICE 100 was suppose to include. At first I wasn't getting my data bundle. I complained, that got sorted out. But now I just received my august invoice and they charging me R269.97 instead R139 as per catalogue. basically they charging me separately for something I'm still not getting. For the R269.97 on my bill, I'm suppose to get 100mintues, 600mb data, 400sms, but I'm only getting 100minutes, 300mb data & 200sms.I tried emailing their Customer care and I even phoned them.