How to properly file a complaint against a platform?

Could you tell me how to properly file a complaint against a platform if it's ignoring my requests? I've contacted support, but there hasn't been a response for a week. What third-party resources or intermediaries can actually influence the administration? Or is this a waste of time, and should I just forget about the money?

If support ignores you for a week, file a complaint with independent arbitration resources (e.g., casinomeister, askgamblers). They will contact the casino on your behalf. You can also leave a review on rating sites – public pressure often helps. Or contact the regulator directly, if they have a license. For example, the site https://abigcandyplay.net/ always responds within 24 hours. If the site is unlicensed, forget about money – it's a lesson.