If you have made it clear to them that the person they are looking for doesn't live there but they keep calling back try this:

As soon as you know it's them calling say 'just a minute' as if you were going to get the person they are asking for.  Then set the phone down and walk away.   Don't say anything else to them.  Hang up after a few minutes.  Do that every time they call.

I have been getting calls for months which has never been when we are home so they leave messages, I was hime today when they called and i said you have the wrong number and he asked if I had a new number, which I got 6 months ago, so I said yes and he hung up.  One minute later he calls back and whispers liar to me and then hangs lup.

They called my home 6 times in two days asking for a person I have never heard of. I kept telling them they had the wrong number. They kept calling.
I made 1 call to their Toronto office and let them know I was filing a complaint. It's been 6 days now and they have not called back.

Thank you Doug J for posting that info.

I  have been getting  calls from your company and some-one asking  for sammy ,This number (778) 834-4466) belongs to me and there is no body by name of Sammy here , I will  really appreciate if  you guys correct  your information and take my number out from your database so that I don't get calls and save your and my time  .Thank you

Last week and yesterday as well as today  I was  called. Now,  I let it ring and they leave messages . What is the  purpose  of this anyway?

We have been receiving calls for someone in our household that no longer resides here but they keep calling. They call 3 times in a row play touch tone songs in the receiver and threatened to wake us up every morning.So we don't really care when they call it's time to get up and go for coffee. It must really annoy them when you ignore them and do not appear to be annoyed by their harassment. The caller seems to be more annoyed than we are given his escalation of harassment and childish games he is playing. The best way to beat them is to have fun with them instead. Be creative and play the game they will eventually quit.

Interestingly when you call and reach one of the agents at their business number they promptly hangup. Perhaps you should complain to the upper management.

The company is:
Collect Com Credit Inc. (Federal Corporation Number 3203964)
3680 Victoria Park, suite 100
Markham, ON
Phone (416) 916-9152 or 9162
Fax (416) 916-9159
Toll free 1 +1 866-916-9162

One of the CEO's of the Company is

Elliot Ocopnick email:ocopnick @ sympatico.ca
His personal phone number & address information is available on www.canada411.ca

Other executives are Victor Fox and Aaron Taylor. You can google these guys and you can find all kinds of info about their extensive experience in collection. Naresh Jain and Manju Jain of this company were sued in Alberta for their inappropriate collection techniques. The wonders of the internet!

As the saying goes "stuff" does not flow uphill, but it sure flows downhill. Complain to the top.