Who called from 5024100679

Received three calls from this number in a 2 minute time period. The first two calls went to voice mail but a message was not left. I answered the third call, the call remained connected but no one answered.

Its a survey call from Sprint.

I am not sure why they are calling my cell and not leaving messages, if it is a Sprint Survey.  I do not go through sprint at all.

This number calls all the time and like the rest of the comments no voice mail four rings and hangs up. :(