Symantec Customer Service Centre telephone no.

contact symantec to get it sorted out
https://support.norton.com/sp/en/aa/norton-billing/current/contact?entsrc=redirect_pubweb or

Turn off Norton Automatic Renewal service This document provides you the steps to turn off or cancel the Norton Automatic Renewal service for your product to prevent future automatic billing and renewal. You may need to follow these steps if you have got a new Norton product and need to cancel the service on a previous product which you no longer use.
If you cancel the Automatic Renewal service on your current product, you must manually renew your subscription before it expires or risk losing your Norton Protection. If you have already been charged and want a refund, read Requesting a Norton Automatic Renewal refund.
Turn off Norton Automatic Renewal service

1. Go to Norton Management to cancel the Norton Automatic Renewal service.
2. Click Sign In.
3. Sign in to Norton with your email address and password.
4. Under Automatic Renewal, next to the Norton product for which you want to cancel Automatic Renewal, click Off.

https://support.norton.com/sp/en/aa/norton-billing/current/solutions/kb20090818144126EN_EndUserProfile_en_us?entsrc=redirect_pubweb

contact symantec
https://support.norton.com/sp/en/aa/norton-billing/current/contact?entsrc=redirect_pubweb

The Norton 360 have different versions Norton 360 premier, Standard, Net book Edition

Norton 360 premier Edition installation file download link: www.norton.com/n360p_5

Norton 360 Standard Edition installation file download link : www.norton.com/n360s_5

Norton 360 net book edition installation file download link : www.norton.com/n360sne_5

download the installation file run that then it will remove old version if it's installed

after installation you can activate that using the key.

if you have any issues you can contact in email address [email protected]

You need to activate your Norton program with the product key or the renewal code that you purchased for an year.

To enter the renewal code or the serial, please open your Norton product and click on the "RENEW" or "ACTIVATE" or "SUBSCRIBE" button on the bottom of your product and enter it there to activate your one year subscription.



Regards,
Muhaim

First off, you should never post your key or serial number. Secondly you would need to contact customer support for the product. Their website is: symantec.com

Just try it the normal way and it will either take it or not. If not, then ask us for help. And keep in mind that you get a free upgrade from NAV 2009 to NAV 2010 if you want it. (Product Upgrades)

Unless you mean you want to convert a one-machine subscription to a multi-machine subscription. For something like that, you need to talk to Symantec Customer Service.

You must buy it.