T-Mobile Shows Hotspot Data Usage When it is Disabled in My Phone Settings

I've also been seeing this problem over the last few months. I'll be using my normal phone data (which I'm supposed to have 100Gbs of) and as I use it I'll start getting those same texts of running out of hotspot data even though I'm not using my hotspot. And as soon as I go over that hotspot data cap my phone instantly starts to chug when I do anything on it data wise even though I am only a few gbs into my supposed 100gbs I'm paying for.

My only assumption is that the "hotspot" data is actually our real high speed data and that it's a shared data category with our actual hotspot as well. So when you use that data for normal use it also take up your "hotspot" data which is why we're getting the notifications.

Idk what the 100gbs of premium high speed data even is then and idk why I'm paying for it if that's the case. 

Would definitely like to hear from a community manager, mod, or TMobile employee about this since it's obvious we're not the only ones experiencing this.