I told you so! Hee hee...
Andrew, I'm glad you got the vac you wanted. FWIW to the others following your postings, I'll repeat the bit if info I know about OK Sewing and Vacuum to offer a little more insight and stand as witness that Andrew isn't a drama-prone shopper ;-) I would loved to have been a fly on the wall when the call came from Miele to OK S&V ordering the exchange of your vacuum!
My mother belongs to two different quilting groups (or guilds) and the reputation is, and has long been, that OK Sewing and Vacuum is one of the hardest dealers to get good service from. Terms like rude, belligerent, uncaring and indifferent have been thrown around very frequently about OK. I recently was given a non-working, 80's Pfaff sewing machine at an estate sale and when I told my mother about it, she said "Don't take it to OK for repair - go anywhere else but there."
I bought a yellow Miele Solaris vacuum there a number of years ago and other than the initial sales pitch in the store and the walking out with my box of Miele, I had no other interaction with them. I'm a Bernina sewing machine person and Pfaff machines are available in a couple of other places now (they used to be exclusive to OK years ago) so there is no need for me to shop there although they do have a very cool collection of sewing machines displayed very well in the store.
Being a Miele dealer for vacuums and now all major appliances, I would think they might have been schooled in some positive customer service skills prior to and as a condition of maintaining their dealer status. Apparently this is not the case with any of the product lines they sell. (Sebo & Windsor, Pfaff, Janome and Miele) With the nature of the high-end sewing and high-end vac businesses, I would think repeat customers would be a significant portion of their revenue so I'm surprised they have earned such a poor reputation but this is not much different than the others I've heard.
Lessons learned in lives lived, I guess we locals have our testimony to OK Sewing and Vacuum. That new yellow is just gorgeous, BTW!