How to cancel Verizon Fios
You’ll need to provide your account number to cancel the service, so have that handy when you call. The Verizon Fios Customer Service number is: 1 (800) 837-4966
Call to cancel.
Your account number and information can be found in your online profile: https://www.verizon.com/foryourhome/MyAccount/ngen/upr/signin.aspx?session=n&goto=https://www.verizon.com:443/foryourhome/myaccount/ngen/pr/svcs/home.aspx