Faulty Tyres

I bought 2 x Bridgestone tyres at super quik cnr of Landsdowne Road and 1st Avenue Claremont <br> ph:***.The Tyres was advertised at R575 each with a free puncture repair for life of the tyre in Sept(19/09/2014).In November i reversed my vehicle out of my garage when i noticed that i had a flat tyre.<br> I contacted the Manager George Smith and they repaired the puncture.In December i noticed 3 bumps on the outer wall of the tyre and phoned the fitment centre and was asked to bring the tyre in.On taking the tyre off the rim, fine rubber dust was found in the tyre and I was then told by supa Quick***1 that i drove over a pot hole and there was no guarantee on the tyre.I am the only driver of the vehicle and that was not the case.From the rep of Bridgstone Jeff Botha in Montague gardens i was told that the damaged was caused by a run on flat tyre.Now i have two new tyres that i cant use and if the salesman Roan Nothnagel ahd told me there was no guarantee on those tyres which is supposed to be one of the best tyres , i would never have bought it in the first place.Being a pensioner i had to save up a long time to be able to afford those tyres which now seems like a wasteof money