What is customer care phone number? The customer support phone number of American Family Care is 1-800-258-7535 (Click phone number to call).What is american commerce insurance company? American Commerce Insurance Company was founded in 1946 as an auto insurance provider in the state of Massachusetts. The company has since been acquired by Spanish insurer MAPFRE, SA, which makes its home in Madrid. American Commerce is one of five American subsidiaries selling insurance under the MAPFRE USA brand name.