I have a buyer who wants me to sketch out character designs for them before they accept me as a character designer for a long term project, I think? After the first group of sketches I was told that the art director didn't like what I did and wants more sketches, but I feel like I'm being used for free art and don't want to do any more. If anything I thought they would just dismiss me as not something they're looking for and find someone else. I have art up from my other gigs so I don't know why they couldn't infer I may not be able to give them what they want.
The buyer has multiple 5 star ratings so that's why I thought they were legit.
I also find it weird that most of my buyers so far want me to do services that are not like the gigs I already have up, but still want to use them to pay.