Health care related collection agencies. Delete by phone or mail.

I read much of your website and found it to be very helpful. Most of my debts in collection do not show up elsewhere on my credit report. They are all filed under the collections section. I'm not sure if it has anything to do with them being all health care related. My question toyou is concerning how I should approach the collection agencies. If Icall, what type of dialogue should I use? What questions should I ask, and should I request a confirmation that they will delete the entry onthe phone and request that they send it to me by mail, or should I request everything via mail? Any help would be appreciated.
--------------------
I would dispute them first. Mark not my account.
Then validate the debt, if the dispute does not work.
Then call and negotiate
Ask for total removal if you pay in full
Settle for marked paid in full with no new dates.

say you are buying a new home and this is the only thing holding you back from getting your dream.
beg, beg a manager at least