It's a cold call from My Wealth Services. It's an offshore call centre (sounds Filipino) and they struggle to use phones.

Most of the calls from this number have nobody on the other end and they hang up after 5 seconds or so. I called them back and usually they hang up after a second of call centre background noise - I finally got an answer saying "thank you for calling My Wealth Services, how can I help you today?"

I've explicitly requested that this company stop calling me a couple of times in the past couple of months.

Just add the number to your block list.

she asked me when was the last time i check/update my insurance on my superannuation. Once i said i'm not interested in changing insurance or anything, she just kept ongoing which I hardly understood.

An Asian some some stuff in their language then hung up. Weird.

Chasing my insurance info on my superannuation. When I told her I wasn't having this conversation with her she just kept talking. I hung up.

Called me twice, I rang back, call was answered by an automatic machine and was on hold for 2 mins. I then hung up.

They called my work number, I said hello with my company name etc., they hung up.
I rang them back, found out that it's "My Wealth Services" doing cold calling.

They called and and then silence for 15 secs and then they hung up.

They called and said nothing

They ring and then hang up when you answer.

They called and I heard a couple of clicks and then silence for 30 secs and then they hung up.

called.. got nothing..