Advice needed...

[Repro]

I'm guessing he didn't take the bonus offered because I really didn't wanted to continue playing... since the machine restarted from the beginning, and thus not continuing the previous game.

Like he said above, if the game continued from the previous point he was willing to take the bonus, in order to not make it bonus abuse (?)

You are right.

I didn't really wanted to continue playing. If there would have been an option to continue this game by taking on a new bonus i'm not sure what i would have done. It doesn't change the fact that this was mentioned nowhere and that otherwise i would have lowered my bets to get the feature so i didn't have to redeposit in the first place.

[FreeDomme]

No harm in naming the casino. Is this the 'Heist' game policy across all of Rival casinos? This is a clear case of 'phantom terms'. It is clearly not fair to enforce a ghost term.

The game with bonus left them open to exploitation. You innocently happened upon a chink in policy that they covered internally but not in the terms or conditions written anywhere for you to agree to.

At the minimum both deposits should be returned.