They hung up after I answered

Told them not I'm interested in this kind of thing, he shouted at me "this KIND of THING??! This is NOT a sales call!! I told him to not call me again and that I would block his number. Rude, aggressive.

hung up then called back optus message dodgy

Same happen to me last week, 3 times and happened again today. The caller said they were from Vanguard. I called Vanguard and was informed that it was certainly NOT Vanguard.

Said it wasn't a sales call and then proceeded to invite me to a "free" seminar about property and other investments. I hung up.

They hung up. When I called back I got an Optus message saying the number was disconnected.

Called but no one answers

I called back number 0439 096 975 rang 5 times then goes to busy tone.

wanted to sell me a dinner and presentation about real estate.

they called and it went to voicemail and didn't leave a message

Cold call.. trying to get me to attend a seminar on property investment.