I managed an aftersales department for a travel company before COVID.
Our headseats were old but they seemed to do the job, biggest headache was listening into calls as we had a splitter button, I always managed to get the setting wrong.
I have spoken to some very dodgy call centres, however if I get a call advising "I've been in a car accident" I tell them that I have recently as I was a getaway driver for a bank robbery. They put the phone down quickly 😂