DStv Internet must fall.They are robbing us the data is depleting very quick and we paying a lot of money

Iam not happy with DStv Internet. How does one buy 110 g then within 1 week it's finish and the fun part every one is at work kids are at school and if you ask them ,they will be like we don't know what is finishing your data 110g guy in 7days it's gone.And I have seen a lot of people complaining about this on their page.DSTV Internet must fall.