I got this call : no one talks when I pickjust after I got a call from (514) 667-5044also on these lists of weirds calls

Got called twice today.  When I answer, it hangs up and when we don't answer, no messages.  If we call back, no one answers or we get a busy signal.

Who is calling?

I also got a few calls from this number (514) 807-2462 and when i called back it said it ws no longer in service.  How come??

They called me everyday, no one is speaking...