What is the telephone number for magellan? The Customer Service Phone Number of Magellan GPS is: 1800 644 033. Magellan Navigation Incorporation is one of the leading navigation product manufacturer company located in the United States.What is the mailing address for magellan? The address of Magellan GPS is 471 El Camino Real, Santa Clara, California 95050, United States.What is the general customer service number? the General Insurance Customer Support Service Phone Number. The customer support phone number of the General Insurance is 1-866-519-7422 (Click phone number to call).