Unfortunately we have passed the point where Amiga retailers can realistically employ staff full time, dedicated to Amiga based sales. The only company I know of that provides this kind of service is Amigakit. Most Amiga dealers operate their shops as a side project, which means we have to be very patient with them. This is only fair, really. I think Vesalia operate full time too but they don't just deal in Amiga stuff.
I've only ordered from Vesalia a few times but I've not had reason for complaint, they've always been very prompt with my orders.
I can only advise that you continue to send them an email about the problem and await a response. If they're on holiday (how do you know this?) then you might have to wait until they get back. Alternatively, if you require your items sooner than Vesalia can realistically deliver, then perhaps you could cancel your order with them and give AmigaKit a try instead?
As far as I'm aware no Amiga dealer currently stocks BPPC cards anymore. Your best bet for one of these is the second hand market (Ebay or Amibay etc). But be prepared for a shocking price on one of those!!!
AH