Exactly same thing happened to me. My one also started crack, peel and flake from 4 year onwards. I had requested sales to put down "cowhide leather" as what she claimed on the receipt, but no use as I could get through the customer service.
people please don't be fooled by the commitment "genuine leather". it could be fake, reproduced or many kinds of grades, that's why if you ask how much the leather can last, sales person always give your an ambiguously very wide range of life span.