Norton AntiVirus 2012 with Antispyware Problem

I purchased the Norton AntiVirus 2012 with Antispyware from a local Walmart store.  I tried installing it and received the message that the store must validate it to activate it.  I returned to Walmart and was told that it had already been activated when I purchased it.  I contacted Norton customer support a few days ago and have not received a reply.  Has anyone in this forum had the same problem?  I am stuck with a purchased copy that I cannot use and will expire in a few days.  What can I do to resolve this problem?