Poor quality goods at exorbitant prices

I bought a pair of Jeans from your Cresta store, and as you know your things are far from cheap! the jeans are not even six months old and they're tearing at the strangest of places, up to the top of the back pockets are even tearing. I would have understood if i was a size 40 trying to squeeze into a 12 but this is the furthest thing from it! I am extremely upset that i have paid SO MUCH for a pair of jeans that i now can no longer wear! I could've bought 4 pairs of Jeans at Mr Price for the price ive paid for one at your store and the jeans at Mr Price last for years!