I already choose this clinic because I dont have a...

I already choose this clinic because I dont have a job. I have to pay a small fee to be seen... that's fine, but i had to cancel an appointment because I didn't have funds, so I call a couple hours before scheduled appointment to be told because I canceled on the day of the appointment I have to pay 25$
I mean really I come here because they are supposed to work with you financially ... when calling to cancel the appointment whomever answered the phone was very rude w/ attitude.