Worst Data Provider Ever!

Firstly, it's sad that I had to take this step AGAIN before anything gets done about my query. I recently upgraded my contract, AND took an additional item. Not that loyalty matters to Telkom. My cellphone contract is a 1G, the modem I took is 10G. Currently I still have data left on my 1G contact which I make use of everyday. But my modem which is off and at home everyday has 1G remaining from a 10G. I checked my balance the 4th March and 1G was all I had. How does data just happen to go that quick!? I hardly used the device! This is so frustrating! Then when I call Telkom, their lines are always just too busy. It would be much better just canceling this damn thing and never having anything to do with Telkom. Their product and service sucks!