If you are a customer of Thames Water you can pay your bill online. If you make a mistake filling in the form it will be rejected but it will not tell you what the mistake is. Once you manage to fight your way through the form filling and make your payment you are presented with a page…
Hmmm! “Thank you for contacting us”. I was not trying to contact you I was trying to pay you. Did you get my payment? Who knows?
“You will shortly receive an automated email response”. I am still waiting. But as I did not give you an email address I will be very impressed if one arrives.