Prefix 0412 903

Caller Type: Unknown

Some deranged old guy. Calls me twice without leaving any message. When I call him back to ask what the missed call was about, he immediately gets defensive as if he were speaking with a scammer. Refused to say why he called or what business he was associated with. Not sure if this guy has dementia and is calling random numbers. Very unusual as google says this number is associated with a courier company