Go back to directory. Add to Address Book. Allied Trust Insurance Co. Allied Trust Insurance Co. Mail Payments PO Box 2978 Bigfork MT 59911 postal Claims: (844) 200-2842 (option 4) Customer Service: (281) 833-1400 Email: info@alliedtrustinss.comINTERNET Website: http://www.alliedtrustins.com/texas/ Claim Information: http://www.alliedtrustins.com/claims-process/ Categories: Insurance Companies Updated 6 years ago.