https://www.airline-empires.com/index.php?/topic/36562-how-to-speak-directly-at-allegiant-airlines/

https://wmasg.com/pl/forum/topic/254522-11-maneras-de-contactar-con-el-servicio-de-atenci%C3%B3n-al-cliente-de-american-por-tel%C3%A9fono-correo-electr%C3%B3nico-o-chat-por-tel%C3%A9fono/

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https://wmasg.com/pl/forum/topic/254520-c%C3%B3mo-contactar-con-el-servicio-de-atenci%C3%B3n-al-cliente-de-american-airlines-por-tel%C3%A9fono-paso-a-paso/

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https://www.airline-empires.com/index.php?/topic/36546-speak-to-a-representative-at-southwest/

https://www.airline-empires.com/index.php?/topic/36545-steps-to-reach-southwest-airlines-customer-service/

https://wmasg.com/pl/forum/topic/254518-copa-airlines-c%C3%B3mo-contactar-con-atenci%C3%B3n-al-cliente-ayuda-y-soporte/