Peter, that is rather unfortunate, and not at all the way it should be. Apparently, something is wrong with your Avid website account, but the fact that your calls to the activation phone numbers were hung up is a really bad thing, and not one that is common.
Usually, when things like that happen, an email to Customer_Advocate@avid.com gets this sorted out rather quickly, but it so happens that this email address won’t be monitored until Monday (this rarely happens).
For the moment, see if you can find any help here:
https://community.avid.com/forums/t/99212.aspx
I also recommend you try the phone numbers for activation / deactivation again, as that should be the way to go about this.