Welcome to the CHOICE Community @Mike22
Sorry to read about your experience and outcome.
Regardless of their warranty you may still have rights under ACL (Australian Consumer Law) to seek coverage for the failure. To obtain this rectification may involve using the Civil and Administrative Tribunal in your State/Territory.
This requires that formal complaints are made in writing and there are lots of references to this process on the Community.
A quick link or two to some of the information about ACL and complaints letters follows
