Hi-Q Queenstown is a ****

I book two new tyres at Hi-Q Queenstown branch last month and within weeks one tyre on the passenger side had a bubble which eventually bust ruining the spare wheel cover of my car,I went back to Hi-Q Queenstown and was told there is no warranty on Good year tyres ,no acknowledgement on their side that the bubble may have been caused by manufacturing defect,I was only told it is pothole impact of which I did not hit any potholes within the month I had the tyre