I join a lobby to do the Royal Jelly mission with two other people who were friends with each other, Player J and Player A. We cleared the first depth and beat the monsters in order to get the statue to open the gate. They then said they wanted to show me a glitch and told me to stand on the switch next, Player A carried the statue through the gate. At this point I'm locked out of the gate. Player J was the party leader and told me if I didn't go and help them stand on the party switch, he would report and kick me. He immediately kicked me without letting me explain I was locked out of the gate to get to the party switch. So then I was alone behind the gate and no statue to trigger the switch and out 10CE.
I believe they planned on doing this from the beginning because their actions during the mission were peculiar at best. I would have reported them but I couldn't since I was not in their party anymore.
If you encounter these two, beware! I think they targeted me because I was new.
This is why I always make a party and leave it open to all. That way I can kick idiots like these.