when I pick up new customers I tell them would they like it monthly as we offer
a monthly service, if they say no then I charge 3 times the price-remeber guys your prices are for regular maintenance
if a customer comes out and says miss me then I tell then it will be price plus half next time
they ask why i tell then that there is 2 months dirt on the windows and it takes longer,I am giving you a fair price as I have heard that some window cleaners charge double for every 2 months- they soon go back to normal clean
it is a case of taking control of the situation
jinky