Hanover Customer Care Center The Hanover Customer Care Center is an extra layer of service for our Hanover personal clients. Open 18 hours a day, this customer center gives extra access to service when needed. Here is what you can expect through the Hanover Customer Care Center: You can reach a licensed representative during and after normal business hours by dialing (888) 443-1625. Servicing Specialists are available for TROXELL's Hanover customers from: 6 a.m. to midnight. CST, Monday through Friday 8 a.m. to 4 p.m. CST on Saturday Open the day after Thanksgiving, Christmas Eve, and New Year's Eve. Servicing Capabilities: Policy Endorsements & Policy Endorsement quotes Billing Questions Full Policy Review Coverage Inquires & review Claim Consultation New Business Quoting & Issuing Third Party Coverage Confirmation Certificates, Bill & Declaration Page Request Multi-Lingual language line available upon request Get more information about The Hanover Insurance Group.