How to ask someone to repeat something

Man: (Mumbling “Have you seen a green pen anywhere?”)

Woman: I’m sorry, I didn’t quite catch that.

Man: (Mumbling)

Woman: Could you say that again?

Man: (Mumbling “Green pen, see it anywhere?”)

Woman: I’m sorry…er I still didn’t get that.

Man: (Trying very hard but still mumbled)

Woman: Could you say that again?

Man: (slightly frustrated and mumbling once more)

Woman: One more time?

Man: (Mumbling)

Woman: No. Sorry. Nothing.

Man: (Mumbling)

Woman: (sighs) Look! I can’t hear a word you’re saying.

Man: I said “Have you seen a green…pen”…oh, there it is!

(Source:www.englishonline.org.cn)