I have a successful songwriting gig on fiverr, I'm in the top rated sellers for the category and have sold over 100+ songs with a 100% rating. A buyer that I just wrote a song for wants a refund because he doesn't think the song is "good". I spent a lot of time on the song and it's really good. /I don't want to lose my 100% feedback, but I don want to give him a refund AND the product I worked on. What do I do?