Hi guys, an update. 
My coin has arrived at the final destination ( approx 4 hours for withdrawal, 17 hours to appear in bitcoin fog account), so seems in line with what some people have said about delays, rather than out and out scamming, but the lack of communication and absence of a message on the site explaining the situation makes me unlikely to use the service again, when there appear to be other tumblers that operate without all the drama, hope this works out for everybody still waiting, all the best, Simon UK