Something tells me there is more to the story than that, he probably was asking if his would work in Europe or did he need a “Euro” phone, he was told you are good to go in terms of your phone working, he probably never asked about roaming charges.
You are probably right...
But there might have been some “This call may be recorded for quality assurance...” snippets that the Tmobile pres heard to make his pr decision easier.
Spent 6 weeks in Italy...Verizon wanted $10/day which would have been a considerable wad. So we got TIM sims...[But TIM was a disaster to deal with,,,,whole nuther story...]