[UA-Line]How do I escalate a complaint to United Airlines?

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To escalate an issue with United Airlines,+1-804|853|9001 you can: call their customer service line at 1-800-UNITED-1 (+1-804|853|9001), submit a complaint through their online customer care form on their website, or contact them via social media platforms;+1-804|853|9001 if your initial attempt to resolve the issue is unsuccessful, ask to speak to a supervisor or manager to further escalate the complaint.