When you contact The Hanover to file a claim, it will ask for some basic information. For instance, if you're filing a car insurance claim, it will ask you for the date of the accident, the circumstances surrounding the accident and the names and insurance information of the drivers involved. If applicable, it may also ask for corresponding documentation, such as a police report. When you're ready to file your claim with The Hanover, you can do so by: Calling the general claims line at 1-800-626-0250 Calling 1-800-799-6977 (if you're a Platinum policyholder) Calling 1-877-922-2774 (if you're a Prestige policyholder) Downloading the mobile app and reporting it via smartphone Logging into your online account and reporting the claim there Submitting your claim information online without creating an account