Robert from 'Tricon' very pushy and advised that they were in area on Friday to upgrade lines for all businesses for NBN.
Was very insistent about speaking with person who looks after phone account.
Wanting to ask what phone system we're on and whether using normal phone lines or VOIP.

This Indian person tried to call saying He is from Commander. In fact that He claimed He was from Tricomm when pressed. Stupid me I gave Him too much information, but He made fundamental mistake of stating I have ADSL line, when it was not and not with Commander. The rest was stupid, Him calling 2 times more

Keep getting calls from this number. Pick up - very poor line with no one at other end

Received a call from this number. Said he was coming to my area and needed to upgrade my business phone lines, was speaking very quickly. I asked three times where he was from and still didnt understand. He advised they would be in my area on a certain day. I kept probing and he said it was for the NBN. He needed to test line speeds etc so when we connect there is no problems. When i told him ( an Indian sounding man ) that we already had the NBN he said ohhhhh, then i hung up !

I called back number (03) 9072 8942 rang 2 times then goes to busy tone

Received a call from this number. Indian advising that they were going to be in the area to check my copper lines for suitability to be connected to the NBN. Told him that I was already connected and he hung up.