I have had so many! Missed Call-Voice Mail which
1 gives a Reference#, then in an "Alien Voice" says
2 Do not ignore
3 There is a warrant out for my arrest - meh

Got a missed call so called back and got message - "the number is disconnected" so I'd say sellers spammer crooks or whatever are spoofing the number. (ie tricking the system into sending an incorect caller number) I'm adding it to my blocked number list

Caller ID showed this number. Has called previously and hangs up as answering machine kicks in, leaving no message. I answered the call this time. No sound initially then a great deal of background chatter and heavily accented voice saying "Hello". I hung up. What is the point of having a Do Not Call Register if these Numpties can still call?

Caller ID showed this number. I did not answer as I did not recognise the number. Caller waited until answering machine started then hung up. No message left on answering machine.

I called back number (03) 5398 7863 rang 2 times then goes to busy tone.