Caller only calls for 2 rings then stops. Leaves no message. Then calls back 30 mins later and repeats the same process.

just had 2 missed calls, 2 rings - phone has alerted it is spam so I'm going to block

Caller: Tangerine

When I called back it was the automated sequence for tangerine mobile services. We used to have internet nbn with them. Probably making nuisance calls out to try and get customers back.

Had multiple short calls last 2 rings. While turned off left silent 3 second voice mail

Caller: Tangerine telecom

Tangerine telecom who I am a customer of

calls never answers calls back does not leave message

Caller: Tangerine 'support' (internet)

On the 4th call finally caught up with them. Claimed to be Tangerine telco offering free fibre to the premises upgrade. Asked them not to call again. Don't want to block them in case there is a genuine situation.