Enumerate the essentials of oral communication at a formal level.

Style

Oxymoron

Antithesis

You purchased an Air Conditioner through Amazon. When installing it, you discovered
that air filter is missing. Write a letter of complaint to the relevant person in the
organization. 

•  asking how such an error happened
•  stating how this mistake has caused inconvenience to you
•  asserting that you would expect a replacement as soon as possible

Differentiate between information and communication?

Paradox