What is farm bureau 800 number? Farm Bureau Financial Services is committed to helping you protect what matters most, and that means providing access to the information and customer service you need and expect. AgMax & Commercial Customer Service: 800-526-7270. Additional Phone Number 785-587-6002.What is the phone number for farm bureau? The Customer Service Phone Number of Farm Bureau is: +1-202-406-3600. The American Farm Bureau Federation (AFBF) formally known as Farm Bureau is an independent non-profitable organization in the United States.What is farm bureau insurance company? Farm Bureau Insurance is a collection of insurance companies incorporated in multiple states under the umbrella of the American Farm Bureau. The Bureau was founded in 1919 as lobby for farmers across the U.S. The Amercian Farm Bureau touts itself as the ‘voice of agriculture.’.