How do I file a formal complaint for online customer service?

[Heymjg]

I have had to worst possible day with your online customer support:  I have been on hold for over 2 hours, hung up on and still on a call for over hour and half and NO resolution.  Your supervisor can’t even be bothered to take my call.  I have been an Verizon customer since I was 16 and that is over 26 years and you are about to loose me, my husband, my son and the rest of my family.  I upgraded to unlimited to receive a free phone only to get to an actual store to pick up my order and found out it was entered incorrectly no one can even fit it.  I was told I had to wait a whole month to change out of unlimited.  This is unacceptable and ridiculous.