Mortgage and Insurance

I’ve received a collection notice that has no ‘Current Creditor’ listed anywhere in the notice.  There is a ‘Current Servicer’ given, but the two places where the form letter says ‘current creditor’ it is followed by a blank space.

 

The other thing is, I had actually settled the debt in full 3 days after the date stated in the notice as the date the ‘debt was created’.

 

Now I’m just wondering what is the quickest, least-hassle way to address this.  Should I go down the DV path or is challenging it due to the missing Creditor a better way to go?