How much did the laptop cost that you attempted to purchase?
Only reason I ask is because I got my fist amex about two weeks ago now and its been a pleasant experience. My initial spending limit was set at $1500 and the rep told me that I should be fine as long as I don't plan on making purchases over $1000 in one swipe for the first month or so. IF i had to make such a large purchase then they told me simply to call. He was attempting to explain how Amex figures out your spending habits and adjust your spending limit accordingly, this process takes 1-2 months from what he said if you're a new customer.
Just called today to pay my card down and inform them that I'd be making some purchases out of state over the next few days. My statement isn't actually due or anything but I figured I'd take care of it before I go on vacation...might see something I like
. I racked up about $1100 since getting my card and paid it all off which posted right away and bumped up my spending limit a bit.