This is actually a Sprint customer service satisfaction survey automated call.  Nothing malicious but annoying all the same.

I got 3 calls from this number in the past 2 days, no messages left.  I called Sprint and requested they stop these calls and they put paperwork thru to do so.  We will see if that will stop these annoying calls.  They get a big fat 0 for authorizing these calls to go out. When I called the number back, just get busy signals.  Very  unprofessinal and deceiving.  They should ask if customers want to participate first and send them via e-mail instead.