Thank you all for the input. Couple of things:
1) I won't be changing my cell number; I see no reason to. If I get calls again, I can just as easily screen them and ignore the ones I don't want to answer. I did it for three months, I can do it again. Not a problem, just a minor annoyance.
2) Every robo-caller and every Human caller pronounced Gingerly Barboo's (sp?) name differently, so your guess is as good as mine or the debt collectors'.
3) My real name is very white bread Anglo. It looks and sounds NOTHING like Ginergly Barboo. So yeah, it strikes me as fairly incompetent that the Human callers (4 maybe in three months?) never made the connection that perhaps they had the wrong information. Then again, I had to call CMS several times to get them to stop, so ASG not connecting the dots on their own isn't such a stretch.
4) As for logging calls, unfortunately I never did that other than to write down the call-back numbers and the reference number, as well as the calling number (different from the one I was supposed to call). If the calls start back up, I'll try to remember to start logging times/dates in addition to the other stuff.
5) If in the future I have to call a collector more than once to get them to stop calling for Gingerly Barboo at my cell number, I will certainly consider the C&D letter option.
6) I placed my cell number on the do not call list some time ago and I believe it should be good until 2011 if I recall the on-screen message correctly. I'll look into it again and see if I missed something...
7) As for finding ASG, one of the Human callers slipped up and gave the initials of their company (ASG) where none of the robo-calls nor the Human callers had given it before. Through Google I found this forum and through both I found Account Solutions Group and their website, as well as their physical location complete with map and driving instructions. I could drive there if I were so inclined to go cross-country to Buffalo, NY, but don't worry, I have zero interest in doing so ... especially not when they're dealing with 10 feet of snow right now!
Thank you all again. Hopefully I won't need to do any of this in the future or worse, require
debt assistance advice of my own. Take care and God/dess bless.