Was this at lvl 85 and a 10 or 15 m map (i.e. non 40m)?

If so then you shouldn't be surprised people don't like it when you are new to pvp, have no clue and take up 3 slots together. If you lose a toon that means you either need to get back to the GY to collect it or that it will stand there doing nothing. Not to mention that if you are new your gear will be total shit as well.

If you join a 'feature' in the game that is centred around team play and you don't put in any effort, well guess what, most people won't welcome you.