Personal trainer gives Planet Fitness a bad reputation

The Planet Fitness Gym is fantastic and really well appointed. I loved it there. I then unfortunately decided to get a personal trainer and they got one of their personal trainers to contact me. I think the PT are not staff per se, but still they are vetted by the company, I hope. I explained to the lady that I needed to train at 5 oclock in the morning and she was quite happy. I was taken aback to have to pay up front but I did it anyway and I explained to her that I often travelled and how would it affect my up front payment. She assured me numerous times that there would be no problem. Then she apparently got sick and often cancelled sessions when I was already ready to leave the house. A few weeks ago she informed me that her health did not allow her to do sessions with me at five in the morning, but she could accommodate me any other time of the day. She knew that I work and that was the reason I asked for 5 o'clock in the morning in the first place. I thus asked her to then rather refund me as I would not be able to train later in the day. She now refuses to refund me (no surprise there) and suggests that I do a session every Saturday!!! I paid membership fees for two years and now feel that I cannot continue there as she will no doubt blacklist me with the other available trainers. So R2000 down the drain that I overpaid her and then the two year fee.