Dear Sally, (I'm not prufeshnul enuff to call you Mrs. Higgins.)
I am so sorry to hear that we have lost your business to a "professional company" that charges a fraction of our price. I really love being in a conservatory scrubbing away with rough grade wire wool on a hot sunny day, using a jet wash on the insides of opened doors and into joints getting all the crap out and letting all the water dribble in to the electrics.
Most of all I shall miss moving your gargantuam rattan sofas outside and picking up the dog hair/chewed sweets/used condom/dead mouse from underneath.
Best wishes with your professional clean and if they want to borrow my windowvac send them over as it is becoming increasingly redundant.
Yours Sloppily,
Sunshine Windows
Conny Cleaning Con-Merchant to the Gentry.