I know, I should have known better, but the offer was too good.
Anyway, here is my story.
I have used their multi-stage promotion.
For those who are not familiar with their bonuses here is how it works. When it is claimed the account is credited with a certain amount (in my case it was 4000 USD if I am not mistaken). The aim is to win as much as possible with low wagering. The winnings (maximum 1000 USD) will be used as a bonus after the required deposit (25 USD) is made.
Then a high wagering (X 50) of the total balance has to be made to be able to cashout maximum 1500 USD.
The whole setup is very similar to Blackjack Ballroom Casino's sign up bonus (apart from the amounts involved).
So, I was quite lucky and made a cashout for 1500 USD after all wagering has been cleared.
To cut the long story short they voided my winnings quoting this:
As per DaVincisGold's Terms & Conditions which states
"After claiming a free chip, players are required to make at least one
real deposit before claiming another. Not doing so will void any
winnings."
I have claimed multiple free chips, that is true (they had a daily free chips in April and I claimed many of them).
I won't bother the part that they should be able to restrict claiming multiple free chips in row, I will not bother that they could limit the free chips offered (i.e. other Rival casino removed the Monday free chip option from me after some time).
The issue is that my winnings did NOT come from a free chip which this term should be valid for. I played with a deposit bonus.
If they mean to void any winnings after the multiple free chip redeeming then why should I have an account with them? I mean they can always claim that I breached the terms so they can void any of my winnings (even if it came from a deposit).
In summary:
I have used a deposit bonus (only the bonus amount was different according to the winnings in the first stage) and won, but they voided my winnings based on multiple free chip redeeming clause which should be relevant only for free chip winnings.