The voice was male, heavily accented, claiming to be from Telstra and ringing about my internet. When I insisted it "was all good, thank you", he said "how would you know it's all good, you f*#^ing bitch", then he hung up.
I tried calling the number, but it went to a generic voicemail.
Shortly after, I received another call from a different number, again an accented male. I hung up on that one