Who I have the same questioned this topic

How do I communicate with your corporate office?  I have a $750 bill for a single line with no equipment charges. $500 of my bill is a for a single call that I didn't make. I called customer care and no one can help. I've had service with you all for 20 years and I've noticed lately that the few times that I need help you all haven't been accommodating at all!  I'm tired of paying a premium for bad customer service and I'm tired of talking to people that can't resolve my issue.  I need an email or physical address to send my complaint.

Thank you.