Got two calls this afternoon from similar numbers (last two digits 61 (on first call, 64 on second call). Did not recognise, don't expect any calls from 02 so did not answer; numbers now blocked. Both calls came through as suspected spam.

This number as well as (02) 9099 6360 and (02) 9099 6364 called me multiple times. Likely scam or telemarketer

keep missing calls from this random number, and when I tried to call back on it, it says "your call couldn't connected, please check the number and try again" so it's either a spam / fraudulent call.

suspicious call, leave a silent message bank message.

This is not a connected number.
It is computer generated to display, but cannot be called.