Ask or tell the dealer nearest you. Odds are the culprit next to you made an honest mistake and will return the money to the table or will count it and hand it to you.
Refer the problem to the BOXMAN. It is the BOXMAN (WOMAN'S) responsibility to watch the payoffs at the end of the table from which the dice are THROWN.
Refer the problem to the STICKMAN. It is the STICKMAN (WOMAN's) responsibility to watch the payoffs at the end of the table where the dice LAND.
If you think you have been paid SHORT...
The same suggestions as above apply.
It is the BOXMAN'S job to solve player disputes on winning bet pay-offs. In this regard he (she) and the DEALERS are very much like referees in a sporting event.
If the dollar figure on a winning bet is large, you can always ask the BOXMAN for a review of the video tape. And, in many instances The House will pay a wager that is in dispute WITHOUT reviewing the tape, because reviewing the tape is time-consuming and they would lose more money by slowing down the game than just paying off the dispute.