Of course one could say that maybe he was having a bad night, or he didn't feel very well and couldn't be bothered, but there is such a thing as courtesy. Unfortunately far too many of these celebs seem to think that they are above such things once they get a bit of fame behind them.
I have absolutely no reason to disbelieve your friend's experience at all. I find it rather disappointing, because MM does come over as a nice guy. Oh well...I still think he's funny though.
Sorry to those who don't. Tony Hancock was a complete ass, but he was still a funny guy sometimes.
As I said earlier, long before he was flavour of the month when he was just appearing on things, I'd heard the scuttlebutt was that the circuit thought he was a prick.