Radar Dimax R8 Useless Tyre

Very bad, i had purchased a brand new Radar Dimax R8 235/35R19 from a tyre shop which they informed me it is a good tyre which i had on for only 4 days. I was coming out my yard at home and went over the gate rail which i notice a bulge came on the sidewall i was not even going fast as i got 19' rims and i take very good care of my car. There was no damage to my rim at all only the bulge on the tyre. I went to the shop who fiiited my tyre and explained to them which they also had a look at and said that they will report it to the rep. They requested to see the damage on the tyre and said they will not replace it at all. I will not purchase and advice anybody not to buy it as this is a very weak tyre. I should have rather replaced my tyre with the rapid brand that i have on my car for the past 2 years already, i have been on gravel roads and into pot holes with not even a damage on them, where as this Radar Dimax R8 is a very weak tyre and got damaged so easly. I even have pictures of it. So pease guys do not buy this brand rather put extra cash and buy a Rapid Tyre which is perfect for low budget income.

Thanks