I've just had a phone call from Islington Council. I was very annoyed when they didn't ring back, after three calls - there was no way of leaving a message, except your name. They did reply to the recorded letter, but simply to send a receipt. However, after the fourth call I was phoned back within minutes but a helpful bloke, following which, on his advice, I emailed (he gave me the right department to go to). And I've just had another phone call.
So, the good news is that the summons has been withdrawn. And the other good news is that they are refunding me money. And the third good news is that really helpful and intelligent people work for Islington Council, if you can only get hold of them.
I'd like to mention too, that it was a lack of complete information that caused the problem. No one's fault.
*(from title) Shakespeare. Richard III I think.