This number is similar to my own. Only a couple of digits are different. Both my son and myself are getting calls from numbers that are very similar to our own over the last couple of days. We suspect the calls are coming from phone scammers, who are somehow piggy backing onto legitimate Australian numbers and make robocalls type calls. The details for this number look legit. It is a real person who has an address in South Australia. (I am located elsewhere and do not know anyone on SA). Likely the person has no idea there number has been used to call someone else via a phone scam. When the number calls you, you are not able to call it back, as it says there are temporary service difficulties, yet my phone can call any other number.