Rog
Reading your post over the last couple of years , it looks like you have picked up a lot of Ian and Toshs castoffs not counting all the other wfp guys castoffs around Chepstow, also you bought some work off Ian , no disrepect to Ian but he wouldnt of sold you his best customers would he.
You mentioned before you went wfp about the amount of customers you picked up off other window cleaners because they didnt like wfp, and perhaps many more who phoned you because your existing customers reccommended that you were trad.
Maybe its that type of customer which you are losing.
I also seem to remember you saying that you slated wfp to your customers often refering to it as a squirty stick..
I would just take stock , act as though it is the normal thing to do without explaining anything to your customers, be confident in what you do,
When you lose a customer do you ask them if you can check the windows to see what the problem is ?
The ones i lost were the cheaper private houses, where usually the occupants were moaners already, also the jobs tended to be underpriced ones for some reason.
I dont lose any these days.
Dave