Embassies tend to vary depending on quality of the staff and their impact with the local host country.
However try this. Hopefully it may be able to recommend you to a good lawyer who does not shark up large front fees before even looking at your case. That is of course unless your Embassy can help resolve this which should not be too difficult to do.
You could try the angle of possible security risk where an unknown person has been super imposed on your profile. Perhaps you can respond to this article here:
Speak to Hassan Elhais, a lawyer who is the author.
Federal Law No.(3) For the Year 1987 on Passing Penal Code Article No.399:
"Shall be punishable by confinement or by a fine any individual who, by using fraudulent practice, assuming a false name or quality, takes possession for himself or for the others of any movable property or written instrument, or obtains any signature upon such instrument, its cancellation, destruction or amendment, whenever it is intended to deceive the victim and bring him to surrender a legal right.
You can obtain contact details from this article.