Where do I mail a complaint about billing?

[Wardox]

Hi Was not trying to post publicly but only avenue left for me.  Looking for a place to send certified mail that VZ can receive as my next option if that goes unanswered is to file in small claims court.  I mailed to Correspondence Team in Newark.  It was signed for but returned unopened.  I've been getting jerked around for way to long on an issue that no one is able to resolve. 

[tikibar1]

Verizon Wireless

Correspondence

P.O. Box 291089

Columbia, SC 29229

Verizon Wireless - Contact Us

https://www.verizonwireless.com/dam/support/pdf/Notice_of_Dispute.pdf