Call Straight Talk customer service at 877-430-2355. To reach a live agent press 1 for English and then press # twice once you get to the main menu. Customers have reported wait times of three hours or more when calling.
Straight Talk suggests visiting their forum here. Within minutes of posting your issue in the forum you'll see a reply from a customer service agent that says:
"Sorry that you’re having a problem. I’m going to try to help you now. We need to take this issue offline so I can address it further. I will contact you directly with a private message. Thanks."