I'm visiting Oxford shortly and wanted to make an appointment prior arrival. 

How trustworthy girls are and what is the best way to get in touch with them - by phone?

Not many seem to use WhatsApp. 

Go on adultwork, Then check their reviews on uk punting and on here.. Simple 

Yeah i usually text them. Also you can call them. I know some escorts prefer communication via email. Don't forget to put a review after a meeting.