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).What is sig sauer serial number? Depending on your specific gun, the serial number is found on the side of the barrel, the trigger guard or the receiver. Alternatively, the serial is listed on the certificate issued with every new Sig Sauer firearm purchase. Contact Sig Sauer customer service at (603) 772-2302.Is there a customer service telephone number for? General Customer Service: 1-877-383-4802. For faster customer service, please use the links above to contact the appropriate customer service center for your specific needs.