Telephone or Phone?

Bram came into the phone shop. “Hello. My telephone is broken. I need a new telephone.”

The shop assistant looked at him. “A new what?”

“A telephone,” Bram said. “This old word! My grandson says ‘phone.’ I say ‘telephone.’”

The assistant smiled. “Ah, a phone! Same thing. This one is very good.”

“Is it the same as my old telephone?”

“No,” she said. “This one is much better. But it’s still a phone.”

Bram took it. “Good. One more thing. Can it call my grandson?”

“Of course.”

“Then I don’t care what we call it!”