What happens if a multi beats you in a game?

I'm sure this has come up somewhere else, but I'll be damned if I can find it
If you play against an opponent and lose and he's later found to be a multi, do you get your points back, or no? No biggie, just wondering..
If you play against an opponent and lose and he's later found to be a multi, do you get your points back, or no? No biggie, just wondering..