I see you have been posting in the Bangladesh sections. I hope you made copies of all your forms so you can check if you made a mistake and put that one of you is divorced.
If one of you is divorced then CIC needs proof.
If neither of you was ever married before, and not divorced, then instead of sending CIC the divorce certificate they ask for you should write a letter explaining. Explain in your letter you were never divorced and never married before (if true) and if you maybe made a mistake in the application form. If your spouse is the person who CIC thinks was divorced but really he wasn't then he would have to be the one to write the letter explaining and then of course signing and dating it.
That is my opinion.