Who called from 5875884002

I also have seen this number.....on my account listing for outgoing calls. Which I did not dial. I have a "pay-as-you-go" phone - I just topped it up. 4 hours later - there was NOTHING left on my phone. I didnt use it.
I checked online - 15 minutes were taken from me from THAT number - and on my actual phone - I hadnt dialed THAT number.
The only record was online.
All we got when we called them back was a mailbox # prompt.......wtf?

We keep getting calls from this # too, what is it?

This # keep phoning our cell phone and leaves no message. we return the call and no one phones back.

This number is your voicemail service

When someone leaves me a voicemail, it shows on my phone as that phone number and I call it to get my message.