It is TVSN.

I called back number (02) 8198 6098 reached IVR for a company called TVSN.

Caller: TVSN

Legitimate number. TVSN customer service requesting a home address to post a product to.

This was the TVSN (Australia) service centre. They were calling me back after I had sent an email query a few days earlier. This was a legitimate call.

I called back number (02) 8198 6098 reached IVR of a company called TBSM.

Harassing annoying caller, I answer the phone ringing and then they say nothing but sounds like a call centre in back ground. A couple of weeks ago i was phoned by a similar number trying to sell me ink cartridges, may be same people who were told not to phone me again. But they do.
Just hang up and forget them. Nuisances!

Can you tell me the area where this number comes from

Bloody off shore scammer!!

Telemarketer! Block em!