https://otc.education.tamu.edu/wp-content/uploads/formidable/3/Lufthansa_Airlines%C2%AE%EF%B8%8F_Customer_Service%E2%84%A2%EF%B8%8F_USA_Contact_Numbers_Guide.pdf https://otc.education.tamu.edu/wp-content/uploads/formidable/3/Delta_Airlines_USA_Contact_Numbers_Complete_2_0_2_5_Support_Guide.pdf...