These guys are Indian Scamers ... I've talked to Telstra and they are known offenders. They also use the following numbers
(03) 9099 5299
(03) 8644 8152
(03) 8644 2948
(03) 9914 9592
(02) 9210 7976
(03) 8683 5894
(03) 8644 2848
(03) 9017 1682
(03) 9021 3458
(03) 8354 6904

telemarketers

They say that they're doing something with the government. I didn't fully understand them, they are indian. They wanted to know what energy company, I was with and what kind of discount I got. They wanted personal details, I interrupted him and asked him how he got my number as I was on the Do Not Call Register. He told me it didn't matter that I was on the Do Not Call Register as they were doing this for the government. By this stage, I was quite angry and hung up on him. I've blocked the number on my mobile and I've had 10 calls since 1.30pm this afternoon.

I called back number (03) 9017 1682 reached voice mail but did not say from what company.

Indian lady called me yesterday, I told her I am not interested with any offer bla.. Bla..bla
I was asking her why u called me and she yelled at me" I'm not selling anything so I asked what do you want? She said this call is recorded for training purposes and I said I don't care..I asked her to stop yelling at me nicely and asked her what do you want again? And she said we offer 10% for energy???? So I said to her, I used my energy and I pay my bill on time and any prob with u ? I don't want to change to oth provider? She just cut the conversation without at words!!! Rude

Ahhh - even after blocking other similar numbers keep coming through - my decision is not to answer any number that I have not saved in my phone.

these people have no decency! they are indian scammers! they prompt you to give personal details - and when I asked where they were calling from they were evasive and it was "selective offerings" then it changed to "selection offerings" then it changed to "oh we are working on behalf of the government" - they said they were calling about my electricity bill. I told them I don't have an electricity bill, I don't have an electricity account, but they kept talking over me so I asked them not to call me again. then within the space of 20 minutes I got another phone call from them. exactly the same thing - I said I just spoke to you - and the guy said "no, I didn't talk to you!" - they have many numbers - block them if you can!!!!

I just receivd a call at 7:10pm. When I said i was about to have dinner, they just hung up. I didnt even get an opportunity to get stuck into them about an inappropriate time for calling me.

Brilliant piece of information - thanks guys - have added them to my contacts ALL numbers under DO NOT ANSWER! Cheers...

Indian, don't know what they want, gave them a 5 second countdown to explain themselves which they didn't utilise so I hungup!

Got 4/5 calls from this number. Indian accent . Very annoying

they just called me today and asked for personal details and i hung up on them, very unclear line and super dodgy guys

constant prank calls

Indian scammers said they are installing the NBN in my area which is a faster copper wire broadband. Some company called One T??
Also phone number 86448256 ringing

Constantly ring after 6pm. Scammers blocked their number

They are so ignorant. You return the call and get a message that the person is unavailable. I would like to get my hands around the throat of the prick that keeps calling my mobile

You missed a call from (03) 9017 1682, who did not leave a message. This message was provided by Telstra at no charge to you.

They keep calling... So annoying we just hang up

yep they are.
The people calling you from the number will hang up on you the moment you ask to be removed from their calling list.