Bloody ambulance chaser.
"I am deeply concerned and disappointed by the way you gained access to my property without notice or my consent. Irrespective of there being “no padlock,” you are professionals and one does not expect a firm of your quality to be acting in such a fashion.
I’m terribly sorry Tom but this incident is worrying and even more shocking if is this your firm’s standard practice. With respect, it amounts to trespass.
I don’t want to argue over such a nominal amount, but the situation is not satisfactory as it currently stands, and I therefore hope an amicable solution can be agreed.
I really do not want this to tarnish what high regard I had for your firm."
Dear Mr bloody ambulance chaser
Thank you for explaining your feelings and concerns.
I can only apologize that on this occasion I had not contacted you prior to cleaning your windows.
This was an oversight on my part and in order to keep to schedule your windows were cleaned all the same.
Now you have made your feelings felt I will ensure this does not happen again.
I trust you'll find this an amicable solution , please pay the outstanding amount and you can look forward to our professional service in a months time.
Regards Tom.
Simples

Oh yeah
Don't ever call back again
