Https://cams.forum/t/full-list-of-united-airlines-1-855-838-5908-customer-service-usa-cancellations-number-a-step-by-step-guide/92355 https://cams.forum/t/full-list-of-united-airlines-1-855-838-5908-customer-service-usa-cancellations-number-a-step-by-step-guide/92355