Hi Mitesh,
If you have a login ID in Symaccount then try to create a case with Symantec support team.
Please check this article, I hope this article will help you.
How to create a new case in MySymantec (formerly MySupport)
http://www.symantec.com/business/support/index?page=content&id=TECH58873
Or Check below article, Even this may help you.
Contact Symantec Customer Care on
http://www.symantec.com/support/assistance_care.jsp
OR
Technical Support
http://www.symantec.com/business/support/contact_techsupp_static.jsp
Phone numbers to contact Tech Support:-
Regional Support Telephone Numbers:
United States: https://support.broadcom.com (407-357-7600 from outside the United States)
Australia: 1300 365510 (+61 2 8220 7111 from outside Australia)
United Kingdom: +44 (0) 870 606 6000
India: Toll-Free 000 800 4401 456 directly
IDD call: +61 2 8220 7111
Hope that helps!!