Unfortunately for you, a third party debt collection company can and usually does buy judgments held by a judgment creditor at a discounted price and then attempts to collect on them to make money on the transaction. It happens all the time.The third party collection company receives an assignment of the judgment and then can and very likely will try to levy upon the judgment debtor's assets and garnish his or her wages to satisfy the judgment that has been transferred. There is nothing illegal about the process assuming the judgment has been validly purchased.