There would be 3 reasons for you getting called by him.
1 you owe a company money
2. he has paperowrk for you
3. he dialed the wrong number

Plus if you google the number it is quite clear what he does and why he is calling, also on the buisness card he would have left in your mail box.

Yep. Would have only been calling you as you owed money to someone or been taken to court. Cheers

I called back number 0434 408 204 spoke to a guy who said company name is ABC Debt Services .