Xfinity Mobile [Edited: Language] (Mobile Data Usage)

I had Xfinity Mobile from 2017 until 2 months ago.  I was a by-the-gig user.  My data usage was under a 1/2 gig for years.  Then it started climbing up.  I often had to stop using my phone outside of wifi towards the end of the month.  From 9/25-11/25 my data usage jumped.  One night in November I checked my usage before plugging in my phone and and going to sleep.  It was on my wifi.  In the morning the mobile data usage had jumped over 1/2 gig in one night while attached to my wifi and no usage.  I verified that there were no outages and no updates.  Then it jumped another 300 MB in 5 minutes while I was driving to the Xfinity store.

Xfinity convinced me that it was my phone.  I purchased a new phone.  It required the highest priced mobile plan.  However, they lied to me about the cost.  2 days later I returned the phone.  It took months to get my plan back to by the gig.  

In the meantime, I spent hours trying multiple times in a store, on chat, on the phone, using "On It" via text, to get help.  Several times I was told that a ticket was created, but there was no ticket.  Weird things started happening, like they turned off my texting and my friends/family received a message that I had blocked them!  I could never get an answer as to why the data usage was jumping up so high while connected to wifi.  Finally, I saw where the FCC is investigating Xfinity for data loading internet and mobile users.

I've been with a different company for 2 months now.  I purposely used my phone more than usual while not connected to wifi.  My data usage is back to where it was years ago... around 1/4 gig per month.

The only explanation is that Xfinity is [Edited: Language] customers by data loading! [Edited: Language]