Bad Service, no parts

Recently had my Urbania CAV46 stop working. Was told by Cavavin to call local repair company and then report back to them. Service person told me it was the main board but unfortunately the parts are no longer available. What? This unit is still being sold but no parts are available, how can that be. Called Cavavin and was told to send an email to the service group explaining the issue, which I did and never heard back from them.