https://www.siliconvalley.com/2022/11/29/frontier-airlines-removes-customer-support-phone-line/

Frontier Airlines customers will no longer be able to speak on the phone with customer support after the airline removed its phone service in favor of “fully digital communications.”

The Denver-based airline recently transitioned away from the customer service phone number after its Nov. 15 Investor Day report called one-on-one voice calls “unscalable, inefficient and expensive” and left room for “customer negotiation.”