Hi heathro. Welcome.
See the thing with that letter is.....it's a typical form DV letter. They will know you got that off of the internet. And it's just asking for way too much. They are not going to send you everything you asked for. They are lazy......plus they may not have all of that info.
SO.......I think you should focus on proper validation. They probably think past bills are enough.........but they need to provide a detailed list showing how they arrived at the amount they are trying to collect on. Preferably something with a signature proving it's your account. AND the bills have to be from the OC........not just some computer generated printout. Anyone can do that.
If it comes from the OC then more than likely they do have the right to collect on it.......but you can still request that info if you want to.
You should look to see if they are licensed/bonded to collect in your state........depending on your state's requirements
What I would suggest now is that you send them a
DV2. So that way you are letting them know that what they have sent isn't good enough. Be sure to send it CMRR.
Hope that helps.....