Former "One" w/ "Plus" add-on plan holders. Check your account for an unnecessary $10 '80GB hotspot add-on' post-plan migration

I previously had a T-Mobile One Plus Military plan. When we signed up for this plan and opted for the "Plus" add-on, the $10 per line "plus" option included: Free GoGo Wi-Fi on airplanes 10 GB hotspot data HD video streaming Additional/faster high speed International data Now of course I'm on T-Mobile Experience Signature Military, and apparently T-Mobile decided that I needed to keep paying for a $10 add-on that's not even an equivalent, so they charged me for: 80 GB hotspot data for $10 per line per month ...never mind the fact that the new Experience Signature plan already includes 60GB of hot spot, HD streaming, 5GB high speed international data and GoGo inflight 3 Wifi isn't even a thing these days. After seeing how much my bill went up (apparently Experience Signature costs roughly the same as One Plus before* their 80GB hotspot add on cost), I spoke with customer care (they actually pointed out the $10 per line charge), ended up having them remove the 80 GB hot spot add-on, and after a bunch of back and forth they also gave a bill credit to basically cancel out being charged for the 80 GB per line on this month's bill.