High pitched beeping at start of call. Claimed to be from Vodafone but was vague about reason for call and immediately asked for my PIN. I hung up.

Caller: Vodafone

https://www.vodafone.com.au/support/contact/customer-care Defs Vodafone. I did the online chat thing with them to confirm they had called me. That link has a list of numbers they can call you from. Seems like it's not a great way to contact customers, weird noise on answer and first thing they want is your PIN.

Call vodafone and ask

Didn't answer

Funny sound when I picked up. I assume it's a phishing call. Blocked the number

He said he is from vodaphone and giving me a plan and asking for my pin.

Said they were Vodafone wanting to offer deals