I understand that you, as a PR, don’t have access to users’ accounts but you clearly have contacted the team and talked about the above issues.
I find it hard to believe that all they have told you is that they are still talking about resolving them.
As a PR, I believe your job, aside from what you are already doing, is to comfort users who have problems with your casino and keep them updated about the status of their complaints. I am afraid that telling them to just wait, is not enough.
Inside a company, there are many teams and they have internal contact lines so no single team or single person has to do all things for a company. If it is not your responsible tasks, you can forward it to a responsible team and their team members will look at it, handle the case for you and the user. It's how a company work by collaboration of many teams and staffs with an ultimate goal is giving as best servive including customer support for their customers.
As a PR staff, if you were contacted by a user, you can kindly response to the user, and even require him some more details about the case, and let the user that you already forward it to a corresponding team that will follow it up.