A bit of update,
I finally went to the Immigration Office yesterday afternoon, got the sticker in my passport (that's valid up until November this year *suk* and submitted another application of permit extension.
...and then I just found out that the earliest extension permit you could submit is two months before it expires and mine expires in November.
The woman who received my application didn't say a thing, so I wonder what would happen? Would they just put my application in a box and leave it until late September/early October or started doing it right away? I have lost my faith toward the Udlændingeservice, so let's wait and see what happens