A point I always come back to when someone says they've never got a reply is how do you know that your email got there in the first place?
The mails were delivered to their mailserver (I'm running my own MTA with a proper setup so I can check the logs). What happens afterwards is up to them -- if their anti-whatever software has too many false positives, then that's not good...
Anyway, it certainly wasn't worth the time/money to call them: the item I asked about where Lightweight brake pads: their website asks for something like $100 for shipping when you try to order them (maybe mistaking the pads for wheels?).
For the fun of it I just tried it again:
Lightweight Brake Pads - campagnolo $60.71
Hmm, that doesn't even add up properly. I guess there is something "hidden" under "Shipping" that wasn't shown (or didn't copy&paste properly)?