The people you deal with sound similar to the Reichsbürger. They also think Germany right now is not an independent state, but a company ran by the US. They have also proof. Our ID card is called "Personalausweis", while the last part "Ausweis" is just short for ID card, or passport, the first word "Personal" can also be used for employees of a company. So check mate, the state already acknowledges that we are just a company....