This number is for Telstra Business Centre. These offices work all over the place so regardless of where you are located you could receive a call from an centre located far away from you.

same just got one today

Answer the phone and they hang up, becoming annoying.

Telstra business centre Wollongong? Lady with Kiwi accent says she can help sign me up on NBN. Called this number back and you will get an answering machine to leave a message and number for Telstra business centre Wollongong. Their listed contact number is actually (02) 4228 1000

I called back number (02) 8279 3365 reached IVR for a company called Telstra Business Center.

'Telstra business centre Wollongong', asked for my details so they could have somebody contact us to 'improve our phone setup' - asked them to send an email as I had no idea what exactly they were going to improve about our less than 2 year old 'phone setup'