I received a call from 051116, just now.
I thought as if it is some SPD organization and was likely to give me some good news but when I picked the call I came to know that it is NTS.
He inquired me if I received text regarding NEPRA test.
I told him yes I received then he told me to kindly follow up the instructions which were asked to you in that text.
Probably he is talking about 600 fee.