I answered and said, "Hello" - three times with no response. Then the caller said, "Hello", and I said, "Hello" again. He then said, "Hello", and I said, "Yes?" and, he then hung up on me.

Keeps ringing and then hangs up no message

A girl with an Indian accent called saying she is from Telstra offering 40% discount on mobile plan.

Person rang and didn’t leave a message. Dodgy

Caller: Don’t know

Scammer rang and didn’t leave a message. Get a life scammers

No answer upon picking up the call. After 3 of my attempts at hello, the caller hung up.
When I called the number back, there was some very awkward recorded message about some ' executive'
Avoid and block.

Caller: Indian Guy

Trying to flog heat pumps. Told him I was not in Canada and he hung up.

Caller: I don’t care

Just be careful it’s not scammers checking if there’s a live person at the end of the line and capturing your voiceprint