March 2014 had a water main burst and PM's sent out their plumber who repaired the leak, total cost was around $750 which was very hefty to dig into some sand and replace a fitting but I didn't really have any options. March 2015 another leak from main, same plumber goes out and again replaces a fitting, $850 this time. October 2015 another leak! Different plumber goes out, tells me the plumbing is all wrong, main is illegal low pressure hose and leak is from previous repair which is very dodgy and done by a handyman at best! He recommended replacing the entire main with the correct main and he did this for $1100 and has guaranteed the main for 10 years +. I have now looked into the first plumber further who appears to be unlicensed. PM has told me they are looking into the matter, I have requested a refund for all work. What are my options? Not going to let this just slide, dodgy trades is one thing that we can't stand for, my current plans are to leave it with the PM and if unsuccessful for a refund, contact fair trading. Also been wondering if PM is responsible for using unlicensed trades? Any advice for me?