You should complain to the manager of the store. Hopefully he is an animal lover and he will care...
I had 2 bad experiences.
Once the groomer ask me to come pick up Teddy ASAP because she say he was so scare of everyone he was peeing all over himself and ruining his fresh grooming!!? I rush over and found him all happy, so I ask to speak to the groomer who call me and I soon as she show up, Teddy lay down on his back, tail between leg!!!
Never when back there.
Also once I left Mika somewhere else asking the groomer to give her a little trim.
I pick her up NAKED!!! Shaved up, they say she was to tangle!!! She did had some tangles (she as just spend one month with my mother as I was selling my condo) but honestly not that bad!!! They could of call me to ask!!
So after that I when and got 2 clippers (one regular one small for face),scissors and a grooming table.
No more worries... except for the dogs, that have to deal with there weird hair cut...
But I am learning and getting better at it.