It's an excuse basically to get out of it.what you do is you call their Bluff and say "oh not a problem I'll return today do it all by ladder and it'll be done by ladder in the future" I can guarantee you will then be told "no no it's too late now you had youre chance we're not happy to proceed" in turn then you say oh I understand so I'm guessing you just wanted a one off clean? For some reason some customers have a major issue admitting that but by the above statement you've basically got that in a nutshell and then they are somewhat at ease to say yes a one-off clean because if they use the excuse they want it done traditionally you're offering it traditionally yet they're still saying no
They know that they're going to look petulant so then the truth will come out and then you say not a problem give me a call anytime for XX price obviously more than a regular
Or you just say not a problem I totally understand
And move on