What is liberty mutual customer service phone number? 800-451-7065 is the customer service phone number of the Liberty Mutual. customer service number enables the customers of the Liberty Mutual company to convey their complaints or suggestions.What is liberty travel phone number? The customer support phone number of Liberty Travel is 0749188380 (Click phone number to call).Where is liberty national home office? Liberty National Life Insurance Company Corporate Head Office Address: Office Location: Liberty National Life Insurance Company, 3700 S. Stonebridge Drive, Post Office Box 8080, McKinney, TX 75070, United States. Telephone Number: +1-(800)-931-0459, +1-(888)-776-2500, +1-(205)-325-4979.What is the phone number for liberty mutual insurance company? Phone Number of Liberty Mutual Auto Insurance is +1-888-398-8924, 1-800-451-7065, 1-800-225-2467 . Liberty Mutual Auto Insurance is a type of insurance offered by Liberty Mutual Group. The company specializes in property and casualty insurance in the United States.