Dunlop, Poor Quality Tyres

I bought a set of 4 17 inch Dunlop tyres from Longlife Tyres on sunset avenue. these tyres are a horrible quality and waste of my money. the first 2 tyres burst on the inside wall. i didn't think very much of it but replaced both with another brand. a few weeks ago another 1 burst on the inside wall, this got me very upset. currently the 4th tyre is losing pressure on the inside wall and i can also see some thread showing on the outside wall as well. im very disappointed with the quality of tyres dunlop is making. i will never encourage anyone going forward to put dunlop tyres