Caller: Apparent Commonwealth Bank

Automated voice message notifying of transaction against a debit card and to enter # options if approved. Am not a Comm customer

Received a missed call from this number and when I rang it back it was answered by a Chinese speaking recording.

Female with chinese acent called saying they were from comm bank.
said a attemp to use my accout to buy bit coin overseas to the amount of $1600 @ 10AM (call was at 2:45 pm ) I asked why ut took so long to call me. She hung up !
I did not reveal any imfomation