Sad to see them going quiet because they know u got something. Next time spread your bets or don't use them at all. Plenty of guys to exchange BTC for other crypto in the sphere.
Yes very sad representatives of Changelly go quiet when they get asked hard questions or are shown hard proof.
I guess the OP is right, Changelly, Atomic Swaps, Changenow and Evercode are all connected by the same set of scammers using aliases.