I just got the same call stating that it was some credit union I never heard of and that my debit card was temporarily suspended. I ignored the first call yesterday but it just happened again. It's getting old by now.
I answered the phone and at first...nothing. Then a woman started laughing like someone had done something funny (not hysterical, just funny). I waited, didn't say anything else and the line went dead. Tried to call the number back and got a recording "Your call can not be completed as dialed. Please check the number and dial again. 01 fifteen."