I'm ok, If the issue is with the bike being faulty then the dealer should loan you a bike as a courtesy. I wouldn't trust any bike shop with an oil change as I have heard a lot of them dont bother and just top it off. Check the oil and see how clean it is but I am still convinced what I heard was your cam chain. Did you buy the bike new, if so then surely there would be some kind of guarantee that you can shove under their nose. Happy to help if you need.