The forum is just other buyers and sellers - there is no one here who can help you with this. Panicking and writing in all caps isn’t going to help, it will just make people not want to stop and read what you posted. If you haven’t contacted Customer Support yet, you clearly need to do that first. If you haven’t it’s unfortunate because they have a long queue and it will probably take them a day or two to answer. There isn’t really anything you can do about that.
If you have already submitted one ticket and it’s already been two days, you should take your ticket number to the Customer Support Facebook or Twitter page. Post a quick note (very short) just asking if they could look at ticket #[yournumber] as soon as possible. Be very polite and don’t write in all caps. If you have already sent more than one ticket and have written like you did here, they may have assumed it was a prank or abusive message. Hopefully you haven’t done that.
Finally, if you really did pay twice and you can provide Customer Support with proof, I am sure they will be willing to return the second payment. If you aren’t able to get your delivery at all because of some hang-up, they can probably refund you everything you paid. Other than that, I’m not sure what you would want them to do, but the main thing is that you can get your money back if there is a real problem, so you can calm down. Good luck.