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 those starting with (02) 7251 ending in 2585, 2578, 2582, 2594, 2598, 2587, 2579, and more from (02) 7202 7021 and 72027017