How to document Casino App complaints effectively?

I play the app Magic Jackpot slots. Recently, I won a jackpot that totals into few quadrillions plus. I also have won trillions in jackpot. After few days, the virtual chips were taken out of my account. And I reached out to costumer service, they said its system error. For context when you buy chips its about $129 dollars for 4 billion virtual chips. So what they have taken from me is a lot. considering I pay for my chips. I know its not regulated by ones for the real casinos. Where to begin? Hoping to connect with other ones that are affected. I know theres lot of us.

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