No willingness to help me return expensive product

Last November we bought two Coolaroo Umbrellas, (R3600 each!) <br> The product has become damaged under a year from natural elements.<br> I returned the product on Wednesday, Binnie one of the managers advised me that there is no stock and he will source for me and let me know whats going on, he also advised that there is a one year warranty on the aluminium of the product.<br> After not hearing from him, I phoned again today to see when I can get my new umbrellas, he said that the supplier came to look at the product and is not willing to credit for the damage. I do not understand how that is my issue, Builders Warehouse is my supplier, and Builders Warehouse should be acknowledging that these over priced umbrellas are of poor quality!<br> I am not willing to let 7grand get flushed down the toilet!