Yes, you should take your own advice

Today my phone rings. I pick it up, and someone is SCREAMING in my ear. I say hello again quite tersely, and the person (a recruiting/temporary staffing vendor we've used) comes on the line and says "Sorry, did that sound weird?". I said "Yes, someone was screaming my ear". She said "I need stop making calls on speakerphone. That's the second time I've done that". I tell her "Yes, you should". What I want to say is "You didn't figure that out after the first time you screamed in someone's ear?" DUH!