Pretty much every time I go into Bark & Meow (I only buy cat food there) I hear the groomer in the back yelling, the dogs yelping and barking and crying. I don't know what on earth is going in that back room but I would NEVER take a dog there to be groomed. It's really upsetting just to be in the store and hear the dogs so distressed. I wasn't at all surprised to read the other review about the groomer. Seriously, take your dog somewhere else!
Edited to add that I was in the store on Feb 7, the groomer was there, and she had an English accent. So it must be the same one as in the other review.