Telkom. How to upload data on your rooter

I have complained about Telkom in the past, when my data would just disappear and drain away from my rooter. I have seen many others complain about the same problem. A couple of months ago I discovered what the problem is. You see, you have a number for your rooter, so you buy data online or at a shop and upload on that number. If you do that, your data drains away in minutes. The way to do it, is to go to a Telkom shop. They then upload the data. You get 10 day and 10 night time GB for R 149, which is very reasonable. This way you get the use of your data. I wish someone told me that.