I'm currently getting bombarded with crypto currency calls. Based on the person I'm talking to they appear to be via India subcontinent.
When I ask to be deleted from their database they simple hang up.
Here are the other numbers they have called from:
+64 21 080 66097
(02) 7251 2565
+44 7783 907541
(02) 7251 2556

Caller: This number.

Is it true that if you ring their number, let them answer but you don't hangup, that they then can't ring out?

Keps calling but never leaves a message.

The Same spoof numbers from the same 7251 series. now I'll be posting their Ip address and detsils online. Block and move on.

Can't be a legit call - all hours, weekends too, and never leave a message. If it was a government call (eg contact tracing) there'd be a message and/or self-identified in a message. Had calls from similar numbers including (02) 7251 2585, (02) 7251 2578, 2582, (02) 7251 2594, (02) 7251 2598, (02) 7251 2587, (02) 7251 2579, and more from (02) 7202 7021 and (02) 7202 7017

currently getting calls from (02) 7251 2578 - shows up as potential fraud not answering and blocking

Beware of this number. It keeps changing the last 2 digits while continuously bombarding you with calls. Suspected automatic dialler, spam or SCAM caller.

Caller: Very rude man

Have called 10
Times in one day! Said i have made enquiries 45 times I asked about what! He said you made the enquiry you figure it out and hung up. Then rang me back again. I hung up!! I have made no enquiries about crypto currency they are rude

Hung up on answer. Called back, number disconnected

and (02) 7251 2596

Who is this is it a scam

Caller: Dunno

Received a few calls from (02) 7251 2578 & also (02) 7251 2580 and (02) 7251 2590 but never answered any of them. Numbers are all owned or were sold by Symbio Networks to external companies to specifically make scam calls. The c*nts at Symbio are located at Level 3/580 George St, Sydney NSW 2000. If you happen to pass by, smash that door for me. Their real office number is (02) 9994 8555