I called back number (07) 3292 1050 rang 5 times then goes to busy tone.

I called back number (07) 3292 1050 reached voice mail but did not say from what company.

rings and hangs up

Received a call from this number saying they were the CLH Group (www.clhgroup.com.au), and wanted me to confirm my date of birth before they would go any further. I refused to and they told me I had been dealing with them for 10 years! I have never heard of them in my life. I did not confirm my date of birth and the call went no further. Sounds suspicious to me. Do not deal with these people.