Yeah that was a jerk thing to say to you regardless, but...
Even as a "veteran", if I'm coming back after a break for a few weeks, or I'm running a dungeon I haven't run in awhile because I'm insane and masochistic enough to try and upgrade my Relic *inane laughing*, I typically mention that it's been awhile. When I was catching up on the story a few months back, I'd outright point out that I was new in every duty I had to queue up for along the way.
Again, not that the treatment you got was warranted, but it's best to speak up at the beginning.