who's number is this - I had a missed call no message left

Caller: Telemarketer

Number purports to be originating in Sydney/ACT but extended delay in responses from the caller designate it to be internationally-based.

Asian accented caller asked if this was a business he was calling as he needed to speak with {business owner's name} about installing Solar Energy.

Advised caller that the requested person was not available for 2 weeks as started their annual leave yesterday, that said person doesn't own the building we operate out of and that they need to contact the building's owner to discuss Solar installation.