They call, leave no message and hang up when you call them back

called in 3 times. no message left. surely, scammers

Caller: unsolicited advertising

Starting with information from NSW government, but offering solar panels. They give some BS excuse where did they get my phone number as its listed on do not call.

Caller: Stated they were from Solar rebates

They call from 8 different numbers starting with 725349...
We are a Drug & Alcohol counselling service, so cannot block the number

got a call from this number on my mobile. I didnot answer, reported the number to vodafone and blocked it on the mobile.

Constant calls from this number and similar numbers

had rung several times in last few days

Caller: Scammers

This is a scam number, block them or they will just keep on ringing on the off chance that you will answer the call.

Calls and hangs up after a few rings. No messages left.

Rang twice a day for weeks. Blocking does nothing.

Caller: (02) 7253 4959

Someone just call and hang up

Caller: (02) 7253 4959

Indian scammers trying to get your information so they can rip you off, they say they are in Sydney but they are in India. Slimmy scumbags.

Scam

Called twice leaving no message

scammers for sure - they keep ringing and hanging up when call is answered. I have blocked number and they change the number by 1 digit each time - idiots

Yes, same thing answer they hang up - blocking this number on my phone

Called, I answered they hung up

They call and hang up.

Missed a call, called back and they knew exactly who I was. Said it was about a government hot water system upgrade for home owners.
I hung up and blocked the number