Unknown caller, not answered - no message left

Caller: Stated they were from Commonwealth bank

Female stated she was from CBA and there had been an overseas transaction and did I want to cancel it. Call was initially very crackle and sounded as though they were reading from a script. They asked me twice if I made the transaction and I stated no. Was a little confused and thought it was a scam (as I hadn't made any overseas purchase) Asked what they wanted me to do, the call disconnected.

Recorded message supposedly from Telstra saying my phone service will be disconnected

Caller: I dont know

text to speech started saying something about Chinese embassy. I hung up after that

automated voice about fraudelent on card- press 1/2 to cancel/approve

Caller: Text to Speech

Text to Speech voice calling about "recent charges on your card". Likely scam.