Hey, I'm in Vancouver, B.C., if you need some help with this bunny liberation, I may be tempted to come help.
Have you tried getting in touch with the local ASPCA? (sorry, I'm sure someone has suggested it, but just thought I would ask)
Does this "pet store" have a name(and address)? If you could post it, I would suggest everyone on this forum send the ASPCA and other small animal rescues emails like crazy, with the name and location!
You are very brave pursuing this so patiently and appropriately, if it were me, I would've lost my s**t at these people and taken the animals by force...
I hope you have some updates soon! If you are still having issues with A.C., I'm gonna start calling them too! This place sounds like it should be shut down and sued.
Arghhh.... I'm very frustrated lately with the way some places treat rabbits!