post him a letter with as agreed in last conversation via telephone on date blah blah that both partys agree to return all arb waste in full job done
i use to deliver/hire waste skips out and it always worked when a turned up with a full 8 ton skip of shite ready to tip and if they wernt in it was tipped as agreed even when police came i told ,em that i would not be walking away with no moneys and next time they would have to be quick to come back as i will return the rubbish in full before they landed tyo stop me etc they always went inside to have a quite word with home owner and allways had a 110% response with all moneys i,ve blocked cars in drivways in the past and once burst front door of its hinges with the rubbish and busted up there flags with the weight of the wagon yes i know its not nice but when you,ve been given the run around for months and know they,ve been away on there 3rd holiday that year etc its takin the mick keep getting turned away he,s not in i will get him to ring you later or come back tomorrow we will have the money then etc ive taken builders cars n vans when ive found out there away on hols ( AGAIN !! ) etc fairy liquid up onto a car transporter just drag them on with a winch and stick a letter through door as agreed payment etc they then come running to you to pay etc and plod tells em its a civil matter etc as you have told them you have there goods etc good luck