The problem is that the average windy simply doesn't care about educating their customers.
How many times have you seen a problem mentioned on here followed by the advice "dump 'em"? Hundreds. Well, the people who advise that are imbeciles. The correct advice is "Tell the customer that you don't accept that kind of behaviour". That way the customer gets to know what might happen rather than another window cleaner just failing to turn up. My experience is that if you tell them that their behaviour causes you problems, they generally stop doing it. If not, I tell them that I won't be coming again and why. It's not always a pleasant conversation to have but it's better than your customer just telling people you stopped coming.
If you just stop coming because someone says "not this time" do you think they know it's because of that or do you think they just tar you with the brush of being another window cleaner who gave it up? Answers on a postcard, please.
I think that is the WORST bit of advice I have read for ages.
If any tradesman told me he did not accept that kind of behavior I would tell him to sling his hook anyway. How patronising!
Fair enough if you dont like them messing you about, but you cant speak to a customer like a naughty schoolkid.