https://www.airwarriors.com/community/threads/a-full-list-of-united-airlines%C2%AE-customer-service%C2%AE-usa-contact-numbers-a-step-by-step-guide.51385/
https://www.airwarriors.com/community/threads/official-list-of-%F0%9D%96%80nited-customer%C2%AE-contact-numbers-in-usa-a-ultimate-guide.51446/