I'm sorry you ran into that. :c

Honestly, as a DPS or healer I never mind getting a new-ish tank as long as they know their limits. Pulling one group at a time is fine - the healer can DPS too. If you're comfortable doing more, awesome. I don't see why people get so bent out of shape and want to kick a new player. All it takes is an extra five minutes of your time - five minutes you get rewarded for if the player is new to the instance - and you probably make someone's day in the process. I dunno, as long as the new person doesn't get hurt over advice or constructive criticism (Don't tell me how to play my class!!!! - we've all run into those and they deserve no mercy) I'd rather take the time to help them out.

Then again, I kinda have a soft spot for new tanks. They get me right in the feels. :3