ughh. rude. I'm sorry someone's being an ass to you. Are they all anonymous, or are they coming from the same account or the same multiple accounts?

ETA: I forgot the most important part-- Don't take your fic down! It's probably just some bitter troll without enough courage to put his/her own story out there. I'm sure the people who read your work and enjoy it would be very disappointed to see it go because of some catty asshole.