Terrible internet service providing.

This morning I received a notification that my data bundles have expired. I then uploaded half a Gigabyte of data after the notification. A couple of minutes later the notification popped up again stating that I had used it up again. I signed into the new MTN app and received 1 Gigabyte of data for free which I appreciated. However that feeling faded away very quickly as again 20 minutes later I got notified that it has depleted again. In less than half an hour I depleted 1.5 GB of data?! The customer support team was very friendly but did not solve any of my problems. This means that the problem does not lie with the staff but rather the internet service. This is not the first time I have experienced problems like these and like every time before MTN has done nothing to help me as a client. Terrible service as I have grown to know the company.