https://www.dfrobot.com/forum/topic/366648

https://legacystories.org/storyboard/entry/25-ways-to-call-how-can-i-speak-to-someone-at-price-line-a-full-detailed-guide

https://www.oddcircles.com/events/a7f4ab08-81f4-4d39-bb2b-409b73113e86/Five-Ways-to-Contact-How-can-i-speak-to-someone-at-Finnair-A-StepByStep-Guide

https://www.oddcircles.com/events/9a041eaf-60ec-4d87-b5fc-70cdc174fed0/Top-10-Ways-To-Call-Quickbooks-Enterprise-Support

https://legacystories.org/storyboard/entry/four-ways-to-speak-directly-to-expedia-for-customer-services-phone-email-and-chat-solutions

https://legacystories.org/storyboard/entry/12-ways-to-quickly-connect-to-american-airlines-help

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5309448

https://www.dfrobot.com/forum/topic/366646

https://legacystories.org/storyboard/entry/how-to-contact-expedia-customer-service-10-fast-and-easy-ways-that-work

https://legacystories.org/storyboard/entry/seven-ways-to-reach-expedia-customer-service-for-customer-services-phone-email-and-chat-solutions