ive only ever had to go back to 1 customer to redo their windows but on multiple times. in the end i stopped going as i was getting sick of it, she ends up calling me and asks, am i still doing her windows, and as im a nice guy, said yeah sure, sorry been a bit busy, will come tomorrow, hoping shes got the message, anyway she rings up a couple of weeks later and cancels as the windows are dirty again!
so annoying, but i was glad in a way at least i dont have to bother with her again, feel pity for the new guy, i cant believe i lasted 3 years with her