Out of curiosity, I clicked through some other exchanges they list with a perfect 100% feedback rating. Here's an example: https://www.bestchange.com/exwallets-exchanger.html

With 8 pages of feedback, and 30 pieces of feedback per page, this exchange has ~240 pieces of feedback. It is rated 0/57, meaning it has ~183 claims against it which it has simply cancelled and therefore do not show up in its ratings. It is incredibly misleading, and I agree, bordering on scam territory, for BestChange to allow these exchanges to simply nullify any and all complaints against them without any kind of resolution or verification the complaint has been settled.

A cynical person might suggest that BestChange allow this to happen since they are paid commission from all these exchanges, and so it is in their own interests to continue allowing user to be scammed by them despite a huge number of red flags.