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Usually, the court clerk has the sheriff's office serve the papers on the defendant (your husband).
You should check with the clerk to see if this was done, and if not, you'll need the clerk to re-issue the paperwork so you can have him properly served.
Understood. Like I said, you can try this on your own and see if you can get it done. Also, you could contact a local legal aid society in your area to see if they could provide free or discounted help.
You can google "legal aid" for your city and find several programs.