Unfortunately, you're going to have to contact Ubisoft support. Did you buy it from the Ubisoft connect app on your pc? This happens quite a lot. It happened to me back when the game launched ( when the app was still Uplay) and I have seen a few other posts about this. I actually called support and they refunded my money in about 2 weeks. I will not buy anything via the app any more, instead I make my purchases from the Ubisoft website.
Welcome to the forums, HEj252! Sorry to hear you didn't get your game! I took a peek at your account and I do see you have already made a ticket with your support team, so I would continue working with them to ensure your game and content is delivered to you. Unfortunately this isn't something we can assist with over the Forums.