Caller: He said he was Ryan from Telstra Business Centre in Sydney

I checked with our local (Belmont, W.A.) Telstra Business Centre and they said it was not a Telstra Business Centre number and was in fact a Scam Caller.

Called and said would update my Telstra Plan and add a new phone.
Knew all my details.
No e-mail when promised and no-one at Telstra seems to know this number

Claimed to be from Telstra, had all my details personal and Telstra account , has also phoned all numbers on Telstra account repeatedly

Called me a few times but never leaves a message. Just rings out when you call back.
says he's from Telstra and wants to update my plan. Knows all my details but wants to do it all by phone no email address. blocked this caller.

Called several times, doesn’t leave a message. I answered and was told that he was from Telstra, but wouldn’t comment when I advised that I communicate with Telstra via email
Called the number and it dialed out but then called me again.
I’ve blocked it!

I called back number (02) 8244 2326 rang once then goes to busy tone.

Caller: Didn't Answer

Scammers

Caller: No sure

He claims to be from TELSTRA