Unable to use my AT&T Global Prepaid Card
I was checking the status of my AT&T Global Prepaid Card by dialing the number on card (800-966-8369) and entering my 10-digit PIN. Unfortunately, I get a recording that says the PIN is incorrect. I called the AT&T Customer Service number (877-288-3404), but I keep getting a busy signal. Is there another number I can call or other contact method to get in touch with AT&T Customer Service so find out what's going on/resolve my issue?