I got an email off Tom (the designer?) today to say he's sending me a warranty replacement driver for my Monolith, so they are still around, just maybe busy?
Considering that my speaker was damaged partly because the 'Audyssey' EQ in my Denon amp added a big low end boost, then I think that was very good of BK to supply me with a new speaker. They want the damaged one back too so they can analyse it with a view to future improvements, so I think that is a good sign too.
Try using their web site 'contact' page to say what you want to buy. If you email them you might get filtered as spam (I had to use my work email to reply to Tom because of this). If you ring Olive (?) I'm sure she'd take an order over the phone as for my two purchases....but don't expect to have it by the end of this week.