My iPhone 5 is the worst smart phone I've ever owned by far. Seemingly days after my warranty expired, the sleep/lock button and the volume down button stopped

My iPhone 5 is the worst smart phone I've ever owned by far. Seemingly days after my warranty expired, the sleep/lock button and the volume down button stopped working. It's great that they're recognizing the sleep/lock button issue and I will definitely be taking advantage of it, but I'm still left with a broken volume button