Who called from 8156878451

Three calls from this number in two hours today.  Answered third call and got no response.

I have been getting calls from this number for a number of days.  She says her name is either Kellie or Callie. She asked for a credit card so i could begin training. It cost $47

I have received 6 phone calls in the last few hours. No one on the line, and after about 10 seconds, a robo voice says "goodbye."

Six calls in the last hour from this number!  Furious.

First call I didn't answer, second call I answered after about 5-10 seconds a robo voice said "goodbye" third call I answered and they hung up 2 seconds later. That's all in less than an hr!!