https://support.coros.com/hc/en-us/community/posts/30812857394580–American-C%C3%B3mo-hablar-con-una-persona-en-American-Airlines
https://support.coros.com/hc/en-us/community/posts/30812871599636-Get-Refund-1-855-559-07-64-What-is-the-cancellation-policy-for-hotels-on-Expedia-24-hours
https://support.coros.com/hc/en-us/community/posts/30811969176468–Call-United-What-is-United-s-%F0%9D%92%9C%F0%9D%92%BE%F0%9D%93%87%F0%9D%93%81%F0%9D%92%BE%F0%9D%93%83%F0%9D%91%92%F0%9D%93%88-cancellation-policy-United-Refund-FAQs