Deposits with held and property totally in a mess

This company does not follow correct business ethics.Being a owner of properties and having worked with many agencies,my experience with this agency is that ,when a client moves out ,they don't pay you ,your dep so you are inclined to book the next tenant with them.If you are owed money ,you will never get hold of the director of the company.Eventually they owe you a big amount and will not pay you.The only way forward is to report them to the relevant authorities