Thank you for your post and welcome to the Bose Community.
I'm sorry to hear that the ear cushions on your QuietComfort 3 headphones are damaged. The great news is that we have replacement ear cushion kits.
If you are in the US, you can find them here QuietComfort 3 ear cushion kit. If you are located in another country, I would highly recommend that you contact your local customer support team. They will be more than happy to assist you with ordering replacements. Global Contact Us > Select your country > Scroll to the bottom of the page > Click 'Contact Us'
Please let me know if you have any further questions.