50-100 6 max hand

[Paluka]

Decent 50/100 6 max. I don't know any of the players that well, but all of them have done at least a little something that seems bad since I've been at the table.
2 folds, and the cutoff raises. I 3 bet with 99. Both blinds call, and the raiser calls.
Flop 457 rainbow. sb checks, bb bets, original pfr calls, I raise, sb calls, bb 3 bets, now the pfr caps! I think this is very very bad for me, but I call 2 cold. Anyone fold here? Sb calls leaving himself with 2/3 of a big bet.
Turn 8, no flush draws. Now the sb bets his $68, bb just calls, and the pfr raises again. So I'm face with 1 2/3 bets here. Call or fold?