Bad customer service

I bought a timberland wris****ch last year online and it was delivered at one of the TFG stores,well to cut the long story short,the watch has some kind of factory fault that they can’t even seem to figure out,the glass always breaks out of the blue,I took it for repairs for the 5th time yesterday for the very same problem,is it too hard to replace the watch with a new one? I mean I’m used to it now,they’ll replace the glass but within a month it break again,it’s so frustrating because there’s no explanation whatsoever to why the glass keeps on breaking