VODACOM DATA RUNNING OUT INEXPLICABLY...

We have for some yearts now noticed that when visiting Mosselbay Diaz as Well as Hartenbos Areas that our Data just simply runs out. This with minimal actual usage of devices. We ran out of our 35 gig cap within two weeks. I purchased an additional 5 Gig that did not last a full week. My son Arrived on Thursday last week and by Saturday His data was finished. Many people I know have experienced the same Problem. Who Can I call to get this checked Out. Surely this is a big problem.....