There are many methods used for online gambling payouts. Reputable online gambling sites readily provide their clients with a wide range of options to collect their online gambling payouts.
Here are some online gambling watchdogs which you can contact and ask for help just in case you fail to receive your payout from your favorite online gambling site.
Interactive Gaming Council (IGC)
The IGC was founded in 1996 as a non-profit organization established to further fairness and consumer confidence in the global interactive gaming industry. By all accounts, the IGC is a legitimate regulatory association that has done a great deal towards establishing and maintaining a level of credibility in an otherwise dubious industry.
Off Shore Gaming Association
The Off Shore Gaming Association (OSGA) is an independent "watchdog" agency that monitors the Off Shore Sports Gaming Industry in an effort to provide the public an avenue to find reputable companies to wager with.
Internet Gaming Commission
The Internet Gaming Commission's biggest claim to fame is their so-called Dispute Resolution section.
Also. here's a list of popular online forums which can help you: