Debt collection phone calls to wrong person

I'm getting several automated phone calls from Enhanced Recovery Co. LLC about a debt. The problem is they are looking for Doug Clark and he does not live here nor am I familiar with a Doug Clark. Some of the calls leave a message others hang up immediately. I answered a few times and either no human was on the line or as soon as I pick up and started talking they would hang up. This is very annoying, can I stop this unwanted harrassment? I am not now nor have I ever been Doug Clark..