This is a scam number! ! ! I called Sprint customer service and they said this is not a legit number! They will only call from an 800 number. They reported the number and blocked it from my calls.

Apparently it's a Sprint Finance Dept number.

I just got a call from them today. I star sixty sevened them (*67), cuz it seems like a homephone landline. But they're automated message says "Hello, you have reached the Sprint Customer Finance Center".
I can see they called me because I'm a day late on payment... not sure if you have reason for them to be calling you.

Hope this helped.