Support Denial: No Support Found

Dear Experts out there,

It was the first time, i opened a technical case with symantec support. Had some problems but somehow i managed to open a case. I received an email of support case number too, but after a while received another email of Support Denial: No Support Found

It said

Thank you for contacting Symantec Enterprise Support Services.

In order to open a support case we need to verify that you have a current Support Agreement for your Symantec product. We show no record of current support contracts for your company.

If your company purchased a Symantec product with a Support Agreement, please provide as much of the following information as possible so we may locate the support record:

-Symantec sales order number
-Serial number
-Certificate number
-License number
-Support Identifier

If your company has not purchased support with this product, please contact Symantec Sales.

Thank you,

Kindly help me, How should i resolve this so that i can easily open cases.