Sorry, but why do you expect the OP or any other casino representative to credit you those $10?
You have just signed up, what makes you think they owe you anything?
As far as I can see, you are part of an alt farm trying to take advantage of such events.
Well, it is expected that people will try to abuse the bonuses with multiple accounts. Nowadays, you will rarely find any casinos to give free bonuses like this. A group of people also try to abuse those bonuses which come with some conditions. Anyway, we are seeing newbie users here just making posts to receive the bonus. It doesn't look good, and against the pinned post rule of the gambling board. I expect OP to stop this free bonus campaign by breaking his silence.