Data disappearing

I use the telkom home office LTE product. My data is disappearing into thin air. I went to the telkom store in sandton city and spoke to the consultant there. He showed me my data use. On a few occasions it indicated that I had used between 2 - 3 Gigs of data in a period of 10minutes. This is not even possible. Telkom is effectively *****ing from me. I have already on a few occasions had to buy extra bundles just to get through the month as my data has been depleted within a few weeks . <br> I contacted the call centre with my issue - the consultant on the phone agreed there was a problem and handed over the issue to the technical dept. I received a call from someone at telkom( not a technician )stating that there was no fault on their side. Clearly they hadn't even bothered to look at the details of the data use<br> I was actually quite satisfied with the product up until the last few months. However my data bill has gone through the roof and I would actually like to cancel my subscription if it were possible.<br> <br>