Goodyear Unreliable Tyres

I purchased two Goodyear tyres two years back which when i used them they only lasted 4months and then exploded on me while i was driving , I never took note of that and proceeded with life as normal in December last year I purchased a further two more tyres it has been barely two months from purchasing these tyres and they have also popped and cannot be repaired i sent a claim and was rejected goodyear you are a reputable brand but the reliabilty of your tyres is very questionable your tyres are not safe and i want my money back