Visa for Algeria

[roro]

I have a specific question:
I'm trying to obtain this visa with the help of an Algerian agency: I've asked for it one month ago (it's for a Ajjer trip in October) and I haven't any info about if I will obtain this visa or no.

The man at the agency asked for the authorisation at the Direction of Tourism and th e reply is OK.
But after the process is to transfer the demand to MFA in Algiers then to Algerian ambassad in Paris then to my consulate.
And he has no info about that.
I've already brought my application to my consulate and they said I have to wait .... but until when, they don't know .....?
So I have a second option (because I have already bought my tickets): I have an invitation from an Algerian friend in Algiers and I suppose I can ask for a visa with it (in this case only to travel in northern part of the country).

MY QUESTION: Is it possible for me to make a second application for this visa with this invitation? Or have I to change the first application?
Before asking to the consulate, I prefer have some advices from travellers in the same situation (or from anybody else).

RR.