My thoughts exactly, if they are happy to drop you for 50p, then they aren’t worth keeping as customers. I have had a couple over the years say they had a quote from someone who is £1/2 cheaper and will I price match. I say to them it’s your house, your money and your prerogative as to who you have to clean your windows. I won’t price match or go cheaper, but if you want to change, that’s your choice, but just bear in mind if you dispense of my services, and your new window cleaner turns out to be crap,or let’s you down, and doesn’t come back, you can’t come back to me. Doesn’t make any difference to some, but one or two decided to stay..