I turned one down today too - was doing a standard Connie hedge top and trim, not been done for three years, very patchy and poor condition. First time we’ve done it and the customer is delighted with what we managed to achieve.
the next door neighbour has exactly the same continuation of the line and we did them 6 years ago - not touched them since. Was a nightmare to climb through, no footholds, 15ft wide.
He knocked me down on price (my mistake accepting that), quibbled over price for fencing we supplied and was generally a pain.
He asked me to do his as well straight after today, in the pouring rain - err no!
What not today? No not at all - not interested and I recommended he calls someone else.
Found out that the kitchen fitter, and a bathroom fitter have both refused to quote him for further work so reckon I dodged a bullet there 👍