Hi Rudras,
thanks alot for stating that you got the card within 4 weeks, this is motivating

Well, when I paid them the amount for visa as asked by the officer as he said that my NE visa formula has been done, the receipt stated that it is a NE visa.
The paper I got from them is "Antrag auf Ausstellung des elektronischen Aufenthaltstitel Nr. xxxxxx Vorgangsnummer : xxxxxxxxxxx"
Did you receive this kind of paper ?
I did not get any card from them yet, I only got this paper. Now I have to wait for the PIN-Brief letter per post which should come in 3-4 weeks and once I receive that PIN, I need to call them and say them the PIN and then only I can have an appointment to collect my electronic card from their office.
I guess you did not have such steps in the process.
Anyway I have to wait then.