Website address: https://www.fidelity.com
Phone Number: 1-800-972-2155
Email/contact form: https://servicemessages.fidelity.com/ftgw/amtd/email/init
Facebook page: https://www.facebook.com/fidelityinvestments/
Twitter account: https://twitter.com/Fidelity
Mailing address: Fidelity Investments, 82 Devonshire Street, Boston, MA 02109-3605