Xfinity Charging me $240 in Roaming when I replied Y for Global Pass???

Hello,

I traveled internationally for the first time with Xfinity recently. I received a text message on September 26 as I arrived to activate global pass, which I replied Y to and thought nothing more of…now I am seeing a bill of over $240?! For 5 days it should have been $50, maybe even call it $60 for the half day although I was mostly on WiFi during that period. 

Xfinity phone support has hung up on me TWICE after being on hold for 8-10 minutes each time.

xfinity Chat support is just copying and pasting information from a script and being of no assistance at ALL…

how can I urgently contact someone regarding this?!

edit: And to slap me in the face harder, now I get an email saying roaming to Guatemala is free with my plan up to 10GB…a week after I return to the USA…of course. This is just disheartening. I’ll be finding a new provider, for sure. But I am NOT responsible for these insane roaming charges, it just can’t be. Clear as day I should’ve had global pass, but the OUTSOURCED support agents refuse to acknowledge that…