Poor quality product

Bought a lawnmower in Dec. Stopped working in January. Makro stated it was not their warranty and Ryobi takes 6 weeks to asses (that's not even the repair) the machines. I have noticed a large amount of these machines being returned to Makro. So I have spent a lot of money on a poor quality product and now have to be inconvenienced even more because of assessments and repairs. (the assessment is going to take longer than what we have used the machine). I would really have appreciated a refund or a replacement- not a ridiculous waiting period