Little help calling stations

[Molson]

Ok im trying to build a bank role i have around $140 and playing sit n go at $3. the trouble i have is everyone keeps calling my bet to the river. i have the nuts maybe to the turn so raising when i should be. except players are calling with hands far to week and hitting the river. what is the best play against these players should i not bet into them and just call when they bet into me.