Have been receiving calls from 0488885xxx. All hang up when I pick up the call, or leave no message if I don't.

Caller: Some national registry (doubtful)

Was not clear in indentifying herself. Non Australian accent. Wanted to know if I had received an email or call from my super fund because the government is cancelling super policies. Didn't want me to let go of tge phone call wgen I said I was not interested in speaking to someone. I hid my caller id before calling

Sounds like an overseas telemarketer

this number called and my phone flagged it as potential fraud.

Caller: Scammer/Spammer

Something about changes to superannuation - but the call didnt come from my superannuation fund. Seems to have been a marketing or scam call.