Another ways to do such is when the casino have a chat group on their website where members could interact and share ideas with the team to making sure they derive satisfaction for the services they pay for.
Any form of interaction between members on a casino platform should be controlled and properly moderated so that the future will not be taken advantage of by scammers and people with dubious plans, because there will always be people who tend to use for bad a feature meant for good on a platform. It is not news that scammers can use chat features from applications to get new victims and lure new victims away for their personal plans.
Solid KYC verification before the chat feature is activated can be a step to ensure safety.