Welcome to the community, sorry you have not received your whole order.
If an item is out of stock, your other items may have already shipped whilst we work on getting the additional stock to send to you. For confirmation, please reach out to your local Bose product support team where an agent can look into your order status for you.
You can reach out to your local support team by clicking this link and selecting your region. This will redirect you to our website. Please scroll to the bottom of the website and there you will find a 'Contact Us' tab, this will provide you with all the relevant contact information for your country.