It may be that you got a really bad reply, or just never ever heard back after writing to a celeb on a number of occasions.
Here's a few from me.
Patrick Steward (He really DOES not like fanmail) Indeed everywhere he acts, or if anyone gets wind of how to contact him, their mail will likely end up in the trash can. So if anyone gets a reply it is not from him :mad:
Tom Baker. Nothing agianst him as an actor, his superb. But when it comes to answering fanmail his really not the best, if you're very very fortunate, you may get a PP

Billie Piper. Oh dear, same agian, I wrote to her via theatre, and never got a return, you can write to her via her agent, but really all your get is a sec signed photo, or as sometimes a PP.
James Garner. Goodness, how much do I have to spend on postage, to get a reply form him :mad: I thought having spent the money for a whole series of the Rockford Files, he may be moved to send a reply. No way.
leslie phillips. Absolutely forget it.

These are some of mine, now over to you.