Are you sure? People are saying that after calls you get LUD and

Are you sure? People are saying that after calls you get LUD and then possibly a message change and you will receive a letter in 30 days etc. But my call ended up with nothing. No NC can be released on the phone, just wait, bla bla.
I hope my LUD was not due to the call which is even more exciting. But so far nothing happens, not even a RFE, sigh.