Called my number a few times. I tried calling back...it cannot be reached.

received a faintly audible call from this number. when i asked the person to speak louder, they got angry and said she would call me back. just before she hung up, i asked why she was calling. she said i will find out when she calls again.

because of the delay in response, and it sounded like a call centre in the background, i won't be answering this number when/if she calls again.