How can i contact icmai? Website:www.icmai.in Dial our Toll Free Number 1800110910 / 18003450092 for assistance relating to Students, Members and General Public. The operation time for the Toll Free Number is Monday to Saturday from 9.30 A.M. to 6 P.M. Contact details Membership DepartmentWhat is the phone number for icom customer service? Main Office Number - All Departments. 800-USA-ICOM (800-872-4266) Monday - Friday 7AM to 5PM PST. Technical Support Department. 800-253-1498. Monday - Friday 4AM to 5PM PST. Sales.Where can i find my ic system reference number? IC Reference Number is unique number used by IC System. You can locate your IC System Reference Number on your letter in the upper right section in the Account Summary box. IC System Reference Numbers will appear in this format: 1231245-001-23.