Very bad customer service.
A couple of months ago I tried to book the Simply Japan tour with Explore. It was a nightmare getting a few important questions answered before we could proceed. Multiple times we were told "we will check with the travel guides on the ground". After three times being told the same thing regarding the same question we just gave up. No one ever got back to us. This company has a low Trust score and as others have noted their customer service is quite bad and they appear to just not care!
Reply from Explore Worldwide