You should speak with an experienced consumer debt defense attorney. However, you have left yourself so little time.
If today is the 30th day from the date that you were served (unless you are able to hire an attorney to handle this), you need to make sure that you go to the Courthouse today and file your own answer.
Avvo is not a substitute for going to law school and gaining experienced in a legal field. So this answer is woefully insufficient, but at the very minimum, your answer needs to state that you deny you owe the debt. (Your answer should not be about how poor you are or how you can't pay, that assumes that you owe the debt and is not a legal defense anyway.)
After you answer, you should still look for an attorney. If you filed a general denial answer, then the attorney should be able to file an amended answer and raise almost any omitted defense. Many consumer firms (like my own) will consult and review documents without cost to you. Over the years, my firm has seen a few medical financing accounts opened by health care providers without their patient's permission.
Skaar & Feagle, LLP maintains offices in Marietta (770 427 5600) and Decatur (404 373 1970), Georgia. The information ("the answer") provided above is for general information and educational purposes only. The answer should not be taken as legal advice for any individual case or situation. Posting the question and reviewing the answer does not constitute an attorney-client relationship. My firm will ask you to sign a written contract prior to the commencement of representation in any attorney-client relationship. Please contact 770 427 5600 or 404 373 1970, if you wish to discuss your situation further. Skaar & Feagle, LLP accepts select consumer rights cases. These cases include, but are not limited to, cases of abusive and unlawful collection activity, debt defense, credit reporting of false or obsolete (old) information, high interest lenders (title pawns, payday loans), debt management plans, and fraud or unfair practices in the sale and financing of automobiles.
I can't tell from this site whether you got your question answered and filed an answer by 6/28. But you should also know that if you missed that date, you have 15 days in which to reopen the default by paying court "costs" when you file an answer. The clerk of the court can inform you of what to pay and the procedure. I'm sorry this is happening to you. Good luck.