Hi jbizbauman, welcome to the forum 
Do I understand you correctly, that you bought a license for three computers, but only need it for one ?
You indeed have to fill out a Ticket : https://support.avast.com and/or, if you already have done that, post your Ticket-ID here.
Than we can put this forward 
Oh, and although I can understand your emotions, please don’t post in cap’s !
Greetz, Red.