This reminds me of a customer i had a few years ago, only wanted the outside cleaned as "she" would be cleaning the inside herself, no problem all good a quick WFP and I'm done 30 mins later.
I get paid leave the job, only for her to call me within a few hours complaining how her windows were not as cleaned as she expected them to be, so I naturally go back and ask which windows and she says all of them... to me like WHAT?
Then I suggested that it was perhaps the inside windows that she cleaned that was the problem, She was outraged that I would suggest that her work was not up to par, So I begrudgingly agree to redo all the outside windows. hoping that would be the end of it.
Oh no not by a long shot, she calls again the following day demanding a refund, stating that I've been there twice and I still could not do the job properly, I was furious so I drive back to her house and basically strong armed my way into the house as she never wanted to even let me inside to see if the problem lay on her work, only to clean 1 of the 2 side by side windows to show her that the problem was on the inside, even after that she was still insisting on a refund for inconveniencing her. I had to laugh at that and instead I gave her a new invoice for calling me back when it wasn't my work that was at fault.