What's that got to do with anything?
You could literally take the words that he speaks, write them down in half a dozen bullet points, and just about all adults could read and understand them in about 30 seconds.
You sign a contract to pay.
If you don't pay they'll keep writing to you until you do.
If you don't pay after a few months they'll pass your account to debt collectors.
If you still don't pay, they'll take you to court and fit a prepayment meter to recover the debt.
If you don't pay then, you're not having any more electricity from us.
You don't need a degree in economics to read and understand that and you don't need some bloke speaking at snail's pace for 3 minutes either.