That's not attitude -- it's advice.
FYI, SU has a schedule for that day at the bcdarlings website, and calling them and the others with a request for an appointment for a lady you are interested in would provide the informaton about whether she was available that day or not. Likewise for calling an indy to schedule an appointment.
The reviews posted are so that you have some way to start finding someone you might be interested in. Your request was too vague (and sounded like you were too lazy to read) to elicit a serious response.
...and if had really checked the agencies' websites, or the reviews on others, you would have a good idea what donations are expected.