Called me a few times, never actually say anything, just hang up as soon as I answer. Are they just collecting location data or something?

telstra sales pitch trying to sign us up to more products

Received a call from this unknown number, they did not leave a message. I checked this site before considering calling back, which I will not given feedback above.

I've blocked this number due to the fact that it is almost similar to this number: (08) 6228 4112, that rang me a few days ago, to which I blocked, as it was a scam, as I found out via research & feedback results.
Be alert, be wise people, always check if your not sure. Take no chances.

Yep. (08) 6228 4161 rang my mobile. I don't answer phone numbers aren't on my contact list.

Caller: Telstra

telemarketing from Telstra

Says they're Telstra