Call came in and ask for mother told she was busy and they hung up

we get this call a few times too.  WE added it to our blocked calls list on our phone.

have never answered them but never like to answer phone calls when not certain who they are

I have called a few numbers back but don't like to call if it registers as a long distance charge or something.  


But persistant people they are

Phone rang, I answered, hear click click with low background noise, more clicks and then a dial tone.  Called the number back - no answer, just rang and rang.

No response

Called from this number which is unknown to me and a hang up...tried to call back and no answer