International free calling works, but texting does not

Xfinity recently told customers that calls and texts from international locations are now free. You do not need to activate the Global Pass to use calling and texting .  However, only calling works.  Called customer service to ask and was told to turn on roaming data.  Well if you do that, you are immediately charged for the $10/ day Global Pass, since a phone is always using data, even when you aren’t using it.  So users don’t really have free international texting.  Customer service not really helpful and only offered to deactivate my Global Pass. I didn’t want that, as I have it for the times I do need international data.  What I really want is for my phone to work seamlessly wherever I am without extra per day fees.