https://en.community.sonos.com/portable-speakers-229132/faq-does-delta-have-a-cancellation-policy-6916559
https://en.community.sonos.com/portable-speakers-229132/faq-does-delta-have-a-cancellation-policy-6916559
https://en.community.sonos.com/portable-speakers-229132/faq-does-delta-have-a-cancellation-policy-6916559