dialogue: Jonny: I haven't received my credit card bill yet.
  Garret: Which credit card are you speaking of?
  Jonny: My Master Card.
  Garret: We sent that bill out a couple of weeks ago.
  Jonny: I never got it.
  Garret: Your bill was mailed already.
  Jonny: What am I going to do since I haven't received the bill?
  Garret: If you haven't gotten it yet, then you should probably take that up with your post office.
  Jonny: Can I get an extension on my bill if it does happen to be the post office's fault?
  Garret: If that's the case, you will need to provide proof of their mistake.
  Jonny: Thanks for everything.
  Garret: Don't mention it. Call back if you have any more questions.
summary: Jonny hasn't received credit card bills, and Garret suggests Jonny should take that up with Jonny's post office.