Hi, its a bit late for this reply, but maybe this Youtube video might be useful start to call the scammers. I usually uses https://www.scammer.info/ to get the latest working numbers to call them. You may find other sources from the youtube video linked, though I can’t back them.
As of today 25/6/'18, 1-888-487-8194 (Tech support) is active, if anyone wants to call them.