To avoid doubt about your story since you are newbie and you vouching for this new casino, it will be better if you provide some proofs to support your story.
It can be a screenshot of your deposit/withdrawal page or maybe a transaction id of your deposit and/or withdrawal.
Trying a new site with $80 is too much (at least for me) especially if the casino is still on WIP, how did you dare to deposit such an amount into a new casino?
I hope it's true, but there probably won't be any proof, especially from a new account.
Even if it's true, then the person in question has good sacks to throw to try new platforms out like that.