dsadasd

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5317230

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5317234

https://www.cybo.com/US-biz/six-ways-to-contact-how-do-i-talk-to

https://hopzone.eu/forums/topic/276358-seven%C2%AE-ways-to-contact-how-do-i-talk-to-someone-at-delta%C2%AE-a-full/

https://zenodo.org/records/15726298

https://doi.org/10.5281/zenodo.15726298

https://hopzone.eu/forums/topic/276409-18-ways-to-call-delta-airlines-customer-service-guide-usaota/