This may sound a bit rough, but I have just one suggestion: ignore people who cries and start raging/offending about heals.
Most times people who behave like this in PvP belongs to one of these categories:
- unexperienced or bad players ("nub" can be offencive) who try to justify the fact they are getting farmed by publicily blaming healer in group chat.
- players who have some personal bad feelings toward you and try to publicily offend you using group/gloabl flame.
And as a more general pvp social suggestion, ignore every comment which contains insults.
Try to do your best and care only about constructive feedback, expressed properly.
This is just a game, but sometimes it's easy to get feelings and it's good to set some rules.