Trac Phone Charged my credit card 2 times and when they received notice of my dispute, they deactivated my phone Miami, Florida

On 7/8/2012 I went on-line to renew my Tracfone minutes which I've done for 6+ years.   When I saw my credit card bill, they had charged me two times, $45.10 or $90.20.  I called the credit card company and told them and they reversed one of the charges.  Not a problem at all, however, last night when I went to use my phone, it was deactivated.  After spending 30 minutes trying to get help, I was given a "special" phone number to contact this morning to speak with a manager.  This was the only person in the entire company who could turn my phone back on???   The rep last night did take the time to see what the problem was that caused the double billing and he said when I was entering my phone number on line I apparently hit a wrong digit.  When he said that, I did recall there was a problem on-line and I entered the payment again.  He said I authorized the charge and that's why I was charged 2 times.  When I spoke with the "manager, James" this morning he was like a robot.  He said the only way my phone would be turned back on was for me to call American Express and have them remove the dispute and re-charge the 2nd $45.10.  I am a senior on a very fixed income and cannot afford to lose my 710 minutes on my phone so I called American Express to have them add the 2nd charge back.  When I was done, I called the special Tracfone mgr. phone number I was given 1-866-667-6472 to tell them I did what they asked however now the special phone number is no longer a working number.   WHAT can I do??