Correction of a misbid
West opened 1 heart playing 5 card majors and his partner raised to 2 hearts with 3 hearts. West then looked at his hand and realised he had misbid as he was 4-4-4-1 with only 1 heart. He now bid 3 clubs which his partner passed - they had a 4-4 club fit.
They made 3 clubs, and I was called after the end of the hand by north as they had got a poor score.
I think the 3 clubs should have been alerted by West as a new suit at the 3 level and some sort of trial bid; they told me they played this bid as non forcing.
Should west have bid 3 hearts over 3 clubs?
How should the hand be scored?