I cannot believe I have to say this but why haven't you taken your dog to the vet? It is showing signs of serious trauma. At least get an exam so you know what is wrong with it, then try to work something out with the groomer. I mean holy crap do you really need to be told that your dog requires medical attention immediately? 
Your dog needs to be looked at right away regardless of who is paying for it.
Your dog needs to be looked at right away regardless of who is paying for it.