It's tricky. We can somewhat work with distributors, as at least they can be sometimes shown demand through retailers. Unfortunately, retailers - notwithstanding the many good ones out there - tend to be a lot more judgmental. It's fair, I suppose, since they get stuck with bad product and have to eat it sometimes, but a lot of them have either given up trying to figure out what would actually sell beyond a few staples, or just don't try. It's the curse of the hobby gaming print market. Well, one of them. :-/
There's not much we can do to convince your particular store ourselves except continue to produce product and prove them wrong. They're not going to believe us any more on the phone than they will if they just visit our site (and clearly, they're not doing that either). Calling every retailer who refuses to stock our stuff isn't really all that practical for a company our size anyway.
This is one of those cases where we have to rely on you guys to change things. Once you get your books - and you'll get them, Mongoose will catch up soon (in a twisted way, it's actually a
positive thing that they're having trouble keeping up with demand) - take them into the store and show them off. If they have demo areas, run the game there (we can provide demo missions - go
here for details). Talk the game up to other customers and increase demand. Eventually the store will have to change its tune.