Zipper broke

I bought this for my 10 year old son as a backpack for school. The only thing he keeps in his backpack is a small 3 ring binder and occasionally he'll shove his sweatshirt in it. There are 2 zippers on the big main pocket and within the first 3 weeks of school the zipper broke. I don't have much use for a backpack that won't close. Won't be buying another K-Cliffs backpack.