My neighbour continually rings the police to complain about noise from music. This has been going on for at least 12 months and each time the police attend, they find no problem. The music is not loud and is during the afternoons when we have a BBQ. Each time we are in the backyard our neighbour looks out his window and then rings police. He does not live behind or beside us and no other neighbours have ever complained. He lives in the street behind us and 3 houses up. We are a couple in our late 50's and usually in bed by 8.30pm as I start work early. How can I stop him under Australian Law from using the police to harass us?