I was playing in Wynn Macau (good rules and no peek) one on one with the dealer, she drew me a 4 and then drew herself a 5, then she drew a 7 to me - GOOD, 4+7 Vs 5!!! but instead of asking me whether I should STAND, HIT, DOUBLE, SURRENDER, she immediately drew herself a 5, realizing she made a mistake, she turned the card face down. Dealer asked her supervisor behind to come to the table, I demanded that this 5 should be void but he insisted that this is the next card and I have the benefit of knowing, I still can STAND, HIT, DOUBLE or SURRENDER, knowing next card is a 5, I HIT and got to 16 and STAND. Dealer gets a 3 and another 10 for 18. LOSS. My question here is 1) What is my right under this situation? Can I demand to void this 5? 2) Should I surrender kowing that I will end up with 16? Should I have not seen this 5, I would have already DOUBLE and loss twice of the amount.