Australian research centre ?

I have had the same, so I have blocked that number so it does not keep happening.

Same as above called no message when you call back its engaged.

Called and asked if this was Kerri and as soon as I said yes, they hung up. Call cuts out when you try to phone the number back

Number keeps calling and hanging up.
Hit a block list.

Constantly calls, doesn’t leave a VM and I can’t call back

this number continues to call me. no one leaves a message and its annoying. i call the number back and no one answers.

Has rung a few times. No answer when you call it back. Very annoying!!

I've been getting these calls for a number of days now. They don't leave a voicemail and you can't phone them back.

I've had a few calls from this number but hangs up when I answer. If I return the call I get a message (female voice) saying my call can't be completed at this time!
Extremely annoying!

Said they were from CTI Coal Trading International - an Australian company who have software to help you trade "and make money". Ie - just say no thanks and hang up

this person rings several times a day and when you ring back it hangs up