So you won the first 3 bets in a 4 team parlay and they cancelled the whole bet instead of paying you for winning a 3 team parlay?
Pretty much, only it's many bets, not just one. There are screenshots of the bets in the original post.
This is brutal. No one does that. If you bet a 4 team baseball parlay and one game gets rained out, then you get paid for a 3 team parlay.