CS3 on disc, authorization code

Hi,

I am most likely in an incorrect community, but could not see anything on CS3.

Laptop crashed, needed to reinstall all programs. Have CS3 on disc, bought new in 2007, with authentic serial number and activation number. At that time 2007, authorization code was given over the phone. Still have that code, but it does not work anymore. The phone number that is displayed on the Phone Activation pop-up when trying to activate the product is to call Adobe on 1800 005 034, however this number is not in use anymore. Adobe chat was no help at all.

How can one activate a legitimate CS3 disc?

Appreciate any help, Ken