Do Rolex Service Centres tell you if your watch is a fake?

[IanW]

Retrieving my father-in-law's Rolex bubbleback from the Hong Kong Rolex service centre, I was told the model no., movement no., and serial number. Please note that none of this was written on the receipt, only relayed orally. Checking later on the internet led me to the information about large numbers of fake bubblebacks, many with this model no. (5015), and many apparently originating in Hong Kong. My question (please help) is whether Rolex themselves - via their very grand, very expensive service centres - have a policy of telling the hard truth and breaking bad news to their customers or just leaving well enough alone and keeping schtum when fake watches turn up. Does the customer have to ask? Would he get an answer?