Thanks for reaching out, I am sorry to hear that your cat chewed through your wire!
I would recommend that you reach out to your local Bose product support team, an agent here can set you up with a replacement order. You can reach out to your local support team via 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.
An agent here can get an order set up for you. Do let us know if you have any further questions.