10GB gone in 2 days

So I usually use the Telkom LTE 10GB for about 20-25 days. This month things have been exceptional. It was gone in 15 days. Ok, so I load extra 3GB for R200, and in 2 days, it was gone. I decided to use my wife's phone as a hotspot, next thing I know 4.5GB of her data is gone in 1 day. Then I buy another 3GB data on a different prepaid sim card, just to see if maybe prepaid things are different, and it was gone in 3 hours. Mind you, I am diong my normal surfing that usually amounts to about 200MB per day, but somehow this month, my data vanished into thin air. I went to telkom, they couldn't help me, said I need to call their Call Center, and I told them those guys never get back to me. And that is exactly what happened. They told me that their systems are down, and that they will get back to me in 2 hours when they come back up, and guess what, Winnie never got back to me. I bought 2GB data from MTN and it's been 3 days and we are still happy with 1GB left. What is Telkom doing to our data?