These people are hateful. When you tell them the person they are looking for does not live here. That it's the ex-wife of your spouse. They still call everyday. The truth gets you nowhere!

Couldn't find a debt collection company with a search for Impact Recovery. There are many Fake debt Collectors making their rounds trying to scam people though. see http://www.nolo.com/legal-encyclopedia/debt-c ... difference.html

Read up on your rights here, get template letters to send and also make a complaint at this government site: http://www.consumerfinance.gov/

Also file a complaint with your State Attorney General's office.
List of State AG’s offices:  http://consumerfraudreporting.org/stateattorneygenerallist.php