I hired an instructor for some advance training a few years ago at $50 an hour. After the first flight we walked back to the hanger and gave to usual "good flight, keep your nose up" type bs then changed me for .3 of ground. I wasn't happy. Next flight he decided to engage in a ping pong match with another instructor and gave me the bs debrief again. He yelled over the the front desk to charge me .3 again. I was upset at this point. I was walking to the door and he yelled "hey when do you want to meet again"? I yelled back NEVER, I will find another CFI that cares.
Funny part was I had another one too, over a BFR. After we flew once he told me he want to do 10-12 hours of ground and 8-10 flights up to commercial standards. Pulled out a contract for me to sign. Said no thanks walked next door and did an hour of ground and 1 hour of flight. Got the signature I needed for 10th of the cost. I had an active CFI and 10 times the CFI time, and he wanted me to fly 10 flights for a BFR up to commercial standards.