I was charged full price for a free consultation what can I do about it?

Hi! I was told I could schedule up to 3 free consultations with different therapists in the same organization. I scheduled three but for one of them I was charged full price. How can I dispute this if they will not refund me?

I asked them before the consultations what would happen if I went over 15 minutes and they said as long as you don’t go over 30 minutes, you will not be charged- I asked both the scheduling people and the therapist. They both said the same thing now I am being charged and they are telling me it’s because I went over 15 minutes for one of the consultations.

I actually went over 15 minutes for two of them, but was only charged for one plus, I don’t feel like it’s fair that they cannot provide therapy services charge me for a full session and lie to me about the parameters before going into it.

How can I dispute this? They have already said that they will not refund me and I am short on money.