https://www.devex.com/people/how-do-i-speak-with-a-live-person-at-vanguard-2022423

https://www.devex.com/people/is-vanguard-customer-service-24-hours-vanguard-customer-support-anytime-2022372

https://www.devex.com/people/is-vanguard-customer-service-24-hours-vanguard-24-customer-support-2022369

https://www.transfermarkt.com/is-vanguard-customer-service-24-hours-vanguard-24-7-customer-support-/thread/forum/696/thread_id/50162/page/1#...

https://communicators.ncsu.edu/articles/how-do-i-speak-with-a-live-person-at-vanguard

https://www.transfermarkt.com/how-do-i-speak-with-a-live-person-at-vanguard-vanguard-helpline-available-/thread/forum/696/thread_id/49650/pa...

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https://www.transfermarkt.com/how-do-i-speak-with-a-live-person-at-vanguard-/thread/forum/696/thread_id/49046/page/1#anchor_46836

https://www.devex.com/people/is-vanguard-customer-service-24-hours-2017635

https://forum.2manuals.com/index.php?/topic/83813-how-do-i-speak-with-a-live-person-at-vanguard-vanguard~-helpdesk/