I had a recent experience where a customer got the best of me and took advantage of my kindness so I thought I’d share… This was a lesson learning moment for me that I will never forget. Feel free to share any similar stories y’all might have as well.
I met up with my co-worker at a residential job a few months ago for an in/out cleaning with steel wool including screens and tracks. I’ll save price for the end… So we get there and get started right away. Everything is mostly going smoothly and most of the glass is cleaning up decently well but a good chunk of this front glass has some bad hard water stains as well as weld-pits. After about 4 hours we get finished up and my co-worker goes to get a signature and payment while I begin packing up all our equipment. About 5 minutes later he comes outside and tells me to get all the equipment back out - she’s (customer) unhappy with the windows. So she points out the hard water stains and weld-pits (we had already told her at the beginning that we wouldn’t be able to get those out), and she says “No no it needs to be done right so do it again.” So my co-worker reluctantly begins re-cleaning the glass while she walks me around to the other side of the house to point out some other minor imperfections that were also hard water stains. I explained to her again that we got what we could but if she wanted us to try other methods like razor blading or acid treatments it would be an extra cost. She replied “Well that’s not right. I was told that the glass would be perfect and like-new.” (Nobody ever told her that). I told her that we could come back with the equipment needed for a restoration but that it isn’t free and would be expensive. She rolled her eyes and just said to get it done right or she isn’t paying. So after about an extra 2 hours of re-cleaning glass that isn’t getting any cleaner (for free), she finally lets out a big sigh and agrees to pay us. But she makes herself clear that she expects us to come back soon to finish the job that was guaranteed to her. For the first time in my 3 years of window cleaning, I left a customer without a smile and a “thank you, have a great day” as I always just naturally say. After she paid and signed the invoice, we both silently turned around, grabbed our equipment and just left. She made sure to call our office to file a complaint about our rudeness. All in all, I made about $70 off that job after the commission split. Yup. Swore on that day that I will NEVER let a customer walk all over me ever again, even if it means losing their business. Not worth it. We agreed after we left that we are never going back there again no matter how many times she calls us.
Lesson learned.
to hear that. Had a lady with a $1.2 Million Dollar house; 30 oversized windows, 1/Side to be cleaned. Quoted $300, she said no; offered to do it for $240; she said no. She called me up and said she would pay $150. I thought 
that’s nice 
but Home Advisor charged me $41 so $150 - $41 = $119. I told her I thought about it and I said no! She was like what? No? I’m could hear her nagging - you missed a spot. Better to just walk away. Some people like her think it’s just window cleaning but to make your glass look good after 15+ years of neglect, it takes time.