The actually ruling here should be fairly straight forward. However, there's a small complication:
Dealer was North, love all, matchpoint scoring, from face-to-face bridge
North is a beginner, having just been taught weak 2s.
2D P P X
P 2H all pass
Before doubling, West asked a lot of questions about the 2D opening. I (South) replied that it showed a weak 2 in diamonds, that was usually a 6 card suit, and showed less than an opening hand (I'm very careful to not specify a point range when my partner pre-empts). It did not say anything about outside suits.
After the hand had finished (2H went 3 off), West went ballistic, complaining about how he had been damaged by my completely inaccurate explanation of my partner's bid, and how he demanded that the director give an adjusted score.
The director, unfortunately, was me.
What's the correct procedure in this situation