Has anyone in Australia successfully lodged a complaint with Ring or obtained a refund/replacement for a faulty product outside the 30-day period?

I purchased a Ring Solar Charger directly from Ring. After several months it stopped working. I contacted Ring Support today and was told:

• They can't refund it because it's outside 30 days; and
• There is apparently no complaints or escalation process.

Does anyone know the correct Australian complaints/escalation process or an email/contact for someone who deals with faulty products and Australian Consumer Law? I am not sure I want a replacement as not confident in the product (and support now!). 

I’d really appreciate hearing from anyone who has successfully resolved something similar. Thanks!