T-Mobile Data Usage When On Home WiFi

Hola,

   I seem to be having an issue with Tmobile tracking my wifi data too. I received a text notification stating that I have used 50GB of data & that they are going to start reducing my speeds. When I look up my usage, I have only used 4 GB of mobile data, but 54 GB of wifi data. I have called Tmobile to ask them why I'm getting a text message stating I have used 50GB of data this month, when it's not their data that has reached the 50GB cap. Their solution was to block the text messages I receive on their end & then I should only truly receive them when the account reached 50GB. This makes no sense to me because their system is obviously sending out that notification for a reason. Their next solution was for me to toggle between mobile data & wifi data. She said to just toggle off of mobile data, so that only wifi data was being used & then she thought it wouldn't track it anymore. Then when I leave my home or office & no longer have wifi, go back into settings to toggle back to being able to use mobile data. I honestly laughed that this was an option. I am expected to go into my settings every day (multiple times a day) to toggle on & off the mobile data, just so that Tmobile doesn't slow down my usage, when I haven't even come close to their 50GB cap on the mobile data? This seems crazy to me. I'm thinking this notification is a glitch in their system, but does anyone have any advice as to how I can get this error resolved?