Phone (770) 228-3843 Support (800) 886-8464 Email support@fullcalc.com Attention Frame Vendors please send all price updates to vendors@fullcalc.com Include company name, contact information and phone number. Internet Update Issues: If you are using Avast virus protection and are experiencing issues with your Internet updates, you must call them in order to resolve the issue. They will need to tell you how to set fc.exe as trusted. Avast: You can call Avast technical support free at 1-877-314-5079.