Betfair’s slot of the week is a really generous online casino offer, giving away different casino bonuses and prizes every week. This week’s title of interest is the awesome Winnings of Oz slot. In order to get enrolled in this weekly casino promotion, all you have to do is wager minimum £10 on the specified game between 18.07.2016 and 24.07.2016 using the WINNINGS bonus code and your free reward will be automatically credited to your account. Grab an extra slots…