This is in fact, Northland Group, Inc., but they are not a collection agency. They are a recovery company, which is to say that they are more in the business of settling debt than actually collecting full balances owed. All the same, they represent clients such as Spiegel, GE Money Bank, GE Capital etc., so if you owe (or owed) a balance for a store credit card or one of these companies, that's probably why they are calling.
All you people clamoring for more government laws and regulations need to stfu. There are ways to handle this yourself without creating bigger govt, more taxes, etc. Try taking care of yourselves instead of begging for the incompetent govt to do it for you. Seriously.