Ich habe nicht gewissen means [I didn't know (a fact)].
Ich habe nicht wissen is a common mistake (with the same meaning) among people who speak German as a second, or third language.
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The correct conjugation is:
Ich habe nicht gewusst, dass.... I didn't know that....
If you want to say I didn't know as a stand-alone statement then the correct form is:
Das habe ich nicht gewusst
or
Ich habe es nicht gewusst
I haven't forgotten you.
I don't like you.
ha ha! You don't know what I said = "Ha ha! Du weißt nicht was ich gesagt habe"...or..."Ha ha! Sie wissen nicht was ich gesagt habe." (formal - "Ha ha! You do not know what I said." --although a bit ironic to use)
"Ich habe Kopfschmerzen und das nicht gefaellt mir" means "I have a sore head and I don't like it" or more literally, "It doesn't please me"
Ich habe es nicht gewollt - 1955 is rated/received certificates of: West Germany:6 (f)
Saugt schaukelt Deutchland habe ich recht nichtmakes absolutely nop sense but translates as suck swing Germany am I right not.
I didn't know that = Das habe ich nicht gewusste I didn't know that = Das wusste ich nicht I didn't know that = Ich wusste das nicht
Ich weiß nicht= I don't know Ich weiß die Antwort nicht. = I don't know the answer Ich habe keine Ahnung! = I have no idea
The "am" can mean several different things depending on what follows (it can mean at, on, in, by, most, etc.). "Ich habe" means "I have."
I haven't seen you in a long time = ich habe dich ewig nicht gesehen I haven't seen you in a long time = ich habe dich seit langem nicht gesehen
ich habe = I have nor is not a German word
The cast of Ich habe es nicht gewollt - 1955 includes: Lorena Danton Anna Maria Siemundt Karl Sladek Horst Spanknebel Paul Werder