You have a defense in eviction court if things are as bad as you say they are. You need an attorney to help you brung these defenses in court. Ask the organizations you have filed with to help you if you cant afford to hire someone.
This answer is intended as informational only, and does not constitute legal advice or form an attorney-client relationship between us.
You most certainly have a defense to the eviction. Additionally, service of the 5 day notice in the manner you described is defective. You will probably wind up in court so it would be wise to hire an attorney who specializes in eviction defense - the sooner the better. In the meantime, start looking around for a new place to live, and if you can move out, do so.