@StewG no problem, best of luck, I hope it works and you can get ahold of them!

@StewG you could always try a wifi phone number app such as textnow or 2ndline.
I'm not sure if you can call overseas, but being it's over WiFi, as long as your # is a u.s. +1 and area code, I don't see why it wouldn't work.
This would save you money, and allow you to call.