********* and dishonest

I bought a ryobi grass cutter online during black friday 2022 special this item stopped working .i was told by the technician of the supplier that i didnt use the correct ratio petrol/oil which resulted in the engine seized. I have been using the item fro almost a year and added correct ration of petrol/oil as per manual .the item has a can in which it specify the ratio.if i had used the incorrect ratio for all these months,then why didnt the engine seize months ago? they just dont want to honor the warranty and therefore passed the blame onto the customer.they just wont admit that this is a bad product. I could have spent my money elsewhere ,but decided to support game as i always received good service ,but never will I buy any products from them again. they are ********* and dishonest