Makro bad after service

I purchased a Ryobi brush cutter from Makro Cornubia on line over a month ago. I only managed to use the machine for an hour before it would not start up again. The brush cutter quality was poor as well as *****s were not even tightened on the machine. I was asked to send it in for assessment. I also tried to start it up again before doing so with failure. I did request a refund as technical department says there are no issues with the machine Ashton the manager did offer assistance initially. At the moment both Managers Ashton and Donavin at Makro Cornubia are avoiding my calls. The service department keeps call me to come a fetch the machine with out any explanation of the the poor performance. I can not drive 340 km every time this machine gives an issue therefore requesting a refund.