Removing Product Key From My Norton Account

Hi Everyone...

Here is my question.

I recently purchased a Norton Product Key from a different geographic region than I live in.

When I attempted to Activate I received a message that it could not Activate this Product Key in my geographic region.

Here is the actual message I received:

YOUR PRODUCT KEY IS INVALID FOR YOUR REGION AND CANNOT BE USED TO ACTIVATE THE PRODUCT (-2009)
ENTER A DIFFERENT PRODUCT KEY

I would like to get a refund from the Online Seller, but I was told that he cannot resell the Valid Product Key because it is now associated with my Norton Account.

Is there any way that I can remove the unusable Product Key from my Norton Account, or have somebody remove it for me?

Thanks