I am on the Infinite 80 plan and I got infinite quota but my allocated hot spot is 5GB monthly and that's being eaten away despite my hot spot being turned off.

I have no idea what's going on, and this is a very relatively new occurrence, it started when I received an SMS from Digi on Oct 30 stating that my hotspot quota was used up. I was confused because I hardly ever use my hot spot data and it's never turned on in the first place.