you have to tell us more about your account first. is it individual or not, margin or not, what you are trying to buy and so on...
search,phone,chat options are available too, you know..
Yeah, IB support takes a little time till they get back to you.
But I've found them most helpful with all my technical issues.
And they can help you best since they know what kind of account you are running.
Also the IB web site itself is quite helpful when you write your query into the Search pane.