hi. Second clean customer in the house ( I saw her and she saw me) before even starting cleaning! ( she Definetely knew i was going to do the windows!! I do the windows and then knock on the door ( 4 times ) to get paid . No answer???? I come back 3 hours later the light upstairs is on still no answer!!!! Well, that 's the second time in 4 months it happens to me ! Customers not wanting to pay !! How embarrassing and low it is for customers to hide in in order not to pay £10 !!! What would you do ??? Cheers