2005 Hyundai Elantra Car Alarm

My key operated car alarm ran out of energy. I had locked the car, and had to get something out of it. When I used my key pad it would not disactivate the alarm. So, when I used my keys to gain access to the vehicle the alarm went off. I was told by a service professional a way to turn the alarm off and start the car. I think he said to turn the key in the ignition once than wait and repeat two other times. However, when I did this it did not turn off the alarm, and would not start the engine. I called the dealership and they were not availiabe. I since, then have called other dealerships, and Wal-Mart Auto. They are all out at this time. I really need to have use of my car. What can I do to deactivate the alarm and start my car? Any help would be greatly appreciated. My phone number is 703-953-4134 if you have any questions, or if you could walk me through the process. Thanks, Leanna