had the round sorted about a year ago and i have very good customers.
i find the ones i dump are the newer ones,you know the type second clean in and its "can you make it next month" and the answer is always the same "not a problem"....open george,scroll down,highlite,delete...move on.i never argue i dont mention for the second time that we clean on a monthly basis,thru winter,light rain,this is my livelyhood,etc etc
but i do find the best way to avoid all this is to tell them from the word go they pay by standing order,i dont take cash for the first clean i give them the bank details,tell them to set up the standing order as soon has its in i will clean,this in my opinion gets rid of the messers