About 2 years ago I got phone call to clean a house - the windows were really bad with paint and bitumen on which I removed - hard work - fortunately I did charge a 1st clean price.
Month later I had to text for gate access for a regular clean - the start of a new job thought I.
Reply "We're having an extension built can you leave it until it's finished?"
A year later another phone call "Extension finished at last can you start cleaning the windows regularly now.
Another 1st clean cleaning up after the builders mess.
A month later text for gate access for start of regular monthly clean.
Reply "Oh sorry we spent up on the extension I don't think we can afford to have the windows cleaned every month."
Got a phone call yesterday
"I know it's been a while but can you come and clean my windows?"