If Only You Could Hear Yourself

(I receive a call and I am unable to hear anything except for a loud static sound. In case the caller can hear me, I speak to let them know and request them to call from a different line. Two minutes later I get my next call.)

Caller: “I tried calling a couple of minutes ago, but you couldn’t hear me. I need to book my phone in for repair.”

Me: “That was me you spoke to. Sorry about earlier, but I honestly couldn’t hear anything you said. If I can just take your details so I can find you on the system we will get that repair booked for you.”

Caller: *gives details and confirms which of his phones is not working*

Me: “Okay, almost done. What is the fault on your phone?”

Caller: “When I am on a call, no-one can hear me – they just hear the same noise you heard earlier.”

Me: “And is that every call, or just some of them?”

Caller: “Every call.”

Me: “…”