https://telefonomexico.zohodesk.com/portal/en/kb/articles/delta-en-espa%C3%B1ol-c%C3%B3mo-puedo-hablar-con-un-representante-de-delta-en-espa%C3%B1ol https://telefonomexico.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablar-con-alguien-en-delta-representante-de-delta https://telefonomexico.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablo-con-alguien-en-united-airlines https://telefonomexico.zohodesk.com/portal/en/kb/articles/gu%C3%ADa-completa-c%C3%B3mo-hablar-directamente-en-united-airlines