Maj0rV: 2 and a half days ago, i've buy a game in a sale in the store, i have bought it via Bank slip, the payment was already confirmed, and i still haven't received The game.
Bank slips are usually processed in up to two working days, and we just had a holiday (Carnival) this week. You should get your game in a day or two once your payment is processed.
You should probably get a prepaid card to make things easier next time. I'm not sure if PicPay's own card is accepted on GOG but most digital wallets offer a free virtual card that you could use on your next purchase instead of waiting for the bank slip to be processed.