Had to call Sprint to get my phone re-provisioned. My account had forgotten how to accept incoming calls. Just refreshing from my end wouldn't do it.
Thing is, it had been out of whack for over a week before I noticed. Most people just text nowadays.
Gotta give props to Sprints customer service. After 60 seconds of nonsense about how track the shipping on an iPhone, the human answered on the third ring and fixed my phone with no fuss. A few years ago, their customer service blew. It's shocking to see a corporation actually fix something like that.