"It's on back order..."

I logged an online upgrade on 27/11/24, looking forward to receiving a new laptop. Needless to say, I'm still waiting. To add insult to injury I have already been debited for the upgrade with no device! Every time I've called "It's on back-order". I understand this, plus the festive season ,but when I call in today I was told basically that there's a very good chance the deal I want will not be fulfilled and. if I want a similar device I'll have to pay more than double!