got the same call but for the previous tennant of a house we purchased 2½ years ago!!!! Our number is on the Do Not Call Register I am going to report them to them as well.

Got a call from a Miriam by this number. It is her direct line. She is located in Sydney. Will not give out company name. Asked for a family member (not giving name on web) and I asked for details to pass on to get person to ring back. She advises that it is urgent for the call and that she is only allowed to give out her name and phone number.  
rang back after hours and it's a computerised message service with no details.

Got a call from a Miriam by this number. It is her direct line. She is located in Sydney. Will not give out company name. Asked for a family member (not giving name on web) and I asked for details to pass on to get person to ring back. She advises that it is urgent for the call and that she is only allowed to give out her name and phone number.  rang back after hours and it's a computerised message service with no details.