Welcome to Adobe Forum,
In case you want to reassign the same CC for Team, please log in to www.creative.adobe.com as the primary Admin, go to "manage Account"
Revoke the invite clicking on the cross sign in front of the invitee's E-mail.
Now a different member can be send the invite & the seat can be reassigned to new user.
You can also contact Adobe Support at http://adobe.ly/yxj0t6