This scam takes some guts and some really good lying abilities, along with knowing how to crack out an order from their site.
Tips:
*You can hunt out previous orders that you may know of
*Ask people if they've done it before and ask for their order ids (try making it close to as the current date as possible)
*A little terrorism fear on them helps
The following had a
made up waited time, and a fake lawsuit-
and a 24 Countdown 
Thank you for your waiting, George has answered your request. It is now serving you!
[George]: Thank you for contacting ------, how may I help you today?
[You]: i've waited far too long, i gave you people ample time, ive waited 5 days and i said to the last customer service person that I WILL SUE THIS COMPANY if i dont get my 600 GOLD IN THE NEXT 20 MINUTES
[George]: Let me check this order for you now.
[You]: 15 minutes left
[You]: 10 minutes left
[George]: We are working on your order now, and we will try our best to fulfill your order,could you check with our live help later?
[You]: no, because you have 10 minutes to get it to me or i will sue 4mmo, I WAITED 5 DAYS
[You]: its your fault for getting the gold to me so late
[George]: Some of the gold suppliers account been closed recently,this is why it is hard to farming gold now.
[George]: Could you check with us later?
[You]: either give me my gold, or give me a complete refund
[George]: We will try our best to fulfill your order.
[You]: if i dont get the gold in 7 minutes, i will either sue you or you give me an instant complete refund
[You]: 5 minutes
[George]: Please we need more time
[You]: 3 Minutes
[George]: We can't supply the gold in time because our famers have gotten account closure
[You]: 2 minutes and you have had AMPLE TIME TO GET MY GOLD
[George]: Please theres nothing we can do about it.
[You]: MAKE IT GO FASTER-
[You]: LAST MINUTE, MAKE YOUR DECISION
[George]: we can't give you your refund sir!
[You]: your time is up
[You]: if i dont get ANYTHING NOW
[You]: i will ruin this company
[You]: ill spread ads everywhere saying 4mmo is horrible
[You]: youtube videos, internet ads, i will sue you in addition
[You]: the company will loose everything
[George]: Okay. I'm sorry, I'll get on right away.
[You]: ..... you hid the gold from me?
[George]: Yes, sorry.
[You]: what kind of idiot are you? because of hiding it from me for 5 days I WANT BONUS GOLD!
[George]: Very so sorry. Meet me in Orgrimmar. Bye
Session Terminated.