Waste Operatives dropping litter and not picking it up

This morning, within the last ten minutes, your waste lorry has been down Long Park, Chesham Bois. The operatives carelessly dropped several pieces of litter and did not bother to pick them up even though they were clearly aware of the litter. I went to the lorry and asked the driver who was in charge. He replied that he was. When I asked him to request his operatives to pick up the litter he refused to do so, saying you’ll have to speak to them. Apart from the fact that dropping litter is an offence, surely these operatives are failing to do their jobs so at the least should receive a warning?