debt validation follow up letter and no respones within 30 days

thank you for all your help so far.
It has been almost a month since I sent my validation letters.
2 of them came back from different co's. with a letter that stated they sent me info on the collection on 04-07-07 and that I had 30 days to comply.
Going further, they stated that since i did not validate it, i assumed the debt. Yet they sent me no info that I asked for!
What should I do. (By the way those 2 co. are the same, using 2 different names for the same amount of money) What should I do for this as well?
And finally the 3rd co. sent me a one sheet letter that said VALIDATION LETTER, with my acct # and last transaction date and the original creditor name but none of the specific info asked for on your Validation letter.
What should i do here?
Maybe send them follow up letters? Any help will be appreciated!
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dispute with bureaus certifed mail on more time
not yours, error on credit report
then call and file a complaint
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i have sent the second set of letters but have yet to hear from them.
should i contact all the credit bureaus and ask them to take it off my file (and send them all documents i have), or should i go to the attorney general?
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this should prompt them to provide said docs.
but sure ad that in.
then complain to attorney general here is another set of doc which might help you
http://groups.yahoo.com/group/credit-repair/files/Letters also a crazy get the collection agency group