We should focus on the "13,533 wagered" just to clarify with the OP if this is a mixed wager on dice and slots, or just one of them?

I'm trying to analyze this "13,533 wagered in 20 minutes." Since both slots and dice have fast results, I think it's possible, especially with the auto-spin feature.

However, that's just my opinion, I still want to see if @BETFLEXI.COM could give us more insight into whether this is really possible, because if not, it could mean that OP is exploiting the system, and the casino has the right to freeze his account, including his balance (deposits and winnings).

Let’s focus on that for now, and we’ll go further after hearing from @BETFLEXI.COM’s rep. Then we can verify and compare it with other casinos to see the standard.