Https://forum.acuityscheduling.com/topic/6109-1-full-list-of-united-airlines%C2%AE-official-customer%C2%AE-service%E2%84%A2-us-based-contact-numbers-a-step-by-step-guide/https://forum.acuityscheduling.com/topic/6109-1-full-list-of-united-airlines%C2%AE-official-customer%C2%AE-service%E2%84%A2-us-based-contact-numbers-a-step-by-step-guide/ https://forum.acuityscheduling.com/topic/6109-1-full-list-of-united-airlines%C2%AE-official-customer%C2%AE-service%E2%84%A2-us-based-contact-numbers-a-step-by-step-guide/