Spam caller.

Hung up as soon as I answered the call - no message left.

answered phone and there was silence so hung up

Keep calling without leaving messages at inappropriate times.

didn't leave a message

research company

Hung up when I answered.

I returned their call and a recording said that they are based in Brisbane and they conduct surveys to random collected phone numbers. It didn't say how they collected my number though.

Hung up without leaving a message

Scammers don’t leave a message. Looking to rip you off

Phone said maybe a scam caller, pretty smart phone I recon had two missed calls from this number

anyone know this number?

Caller: Research Group

Returned call... message is for a research group

Caller: Reachtel

Automated survey about travel.