i want to take advantage of the 1st time purchase of credits in which a player purchases 500 credits & receives 500 free credits. At the credit card info page however, I do not see any reference to this offer, only a check box to simply buy 500 credits. What do I need to do to insure that I will indeed receive 1,000 credits for the price of 500, & not just 500 once purchased. Is there any promo code or such I need to enter? Thank You.