Beware of T-Mobile in Costa Rica

You'd think so but for some reason the calls that show going from Mexico to Panama when we are in Panama and to other countries are charged at something like 2.50 a minute. Even the T-Mobile support folks can't figure this out when looking at our bill especially when it's happening on my wife's phone and not mine and I make 10 times the calls she does. Our theory is it may have something to do with her having a 5G Droid vs my IPhone (family divided) but I blame everything on her droid. All I can say is beware of using them in Panama and check your bill, her line was charged for hundreds in calls every month.