I received a call from 0422 987 198 but did not pick it up because I did not recognise the number.
When I call back from my landline to check, it is disconnected or no longer in service.

This is what I found from reading online forums
As a general rule, a call from a disconnected number is a robocall. Automated phone systems frequently use caller ID spoofing to place telephone calls from out-of-service numbers to prevent callbacks. While recipients can defend against spoof calls, scammers have various motives for robocalling.

Caller ID Spoofing is a malicious act of falsifying a caller’s information to steal money or sensitive information. It involves the masking of a callers’ numbers or calls station to disguise the real identity. Criminals also use real company numbers or neighbors to gain the recipients’ trust.