No message left on business line

Got a call from this number, and after reading this thread, blocked.

Yet another caller that didn't leave a message. Had so many this month that they can only be scammers. Numbers include:
(03) 9038 2582
(02) 8550 1507
(03) 9123 6375
(03) 7051 2081
(08) 6185 2620
0480 078 533
0489 984 418
0485 974 089
0480 090 063
(03) 9021 6770

No message left so I blocked them

Caller: Don’t know the number

Suspect a scam . Have blocked the number

Left line open for about 4-5 seconds then hung up. Nuisance call

They just called but didn't leave a message

Caller: scammer/money launderer

They have hacked my bank account and can cut off my phone call to a friend. Asian accent ; a money scam using Coles gift cards. If they try again may have to go to the police.

Money launderers are using this number to bully me because I did not follow their instructions and instead talked to my bank about them.

Rings often. No response on pick up. Scammer or commercial robot?