Clarks — Unused shoe sole worn out

Hi, I am a big fan of Clark's shoe, and I own multiple pairs of shoes from Clarks. A couple of years ago, I had purchased a white ballerina, but I hardly used it, and it was kept safe with good packing. When I wore it after a few hours, I realized some loose particles coming out of the sole, and within no time, the sole lower portion was completely damaged. I never expected this knowing Clarks super quality; it is very disheartening. The upper part of the shoe is still in good condition and looks brand new. It will be beneficial if this item can be repaired or if the amount is refunded.