Sadly, I'm in the same boat. I've preordered both books, I've not yet received them, and I've not gotten any answer when I contacted the store staff (via the contact-link). Some ETA would be nice, some information if my order has been shipped already... I, too, am increasinlgy frustrated. Moreso, because I changed address in the meantime and I can't get any confirmation if changing the store profile is sufficient to get stuff sent to the new address. I don't mind waiting a bit, but I'd really want some information and someone to talk to about issues.
" ... and the Vogon will do things to you that you wish you'd never been born, or, if you're a clearer minded thinker, that the Vogon had never been born."