The message
from "Jonathan" contains these words:

I noticed a couple of inconsistencies and figures I didn't recognise.

Hang on, you can't add up percentages like that.

Example.

I save 50% of my electricity bill and 50% of my gas bill. Wow, I've
saved 100% - so why do I keep getting bills?

As for the spelling, typography and punctuation, dire, isn't it. The
worst place I know for that is the Secret Hills Centre in Craven Arms -
I was fuming when I left the place. Expensive, shallow and full of
errors.

--
Skipweasel
Pay no attention to that man behind the curtain.