Meri zaban kaali nahi aur na hi interview ka experience hy

but mujay lgta hy officer was not 100% convinced by your answers at the spot. However, it's a good thing that they took the communication proofs. At least they'll read that and make a judgment afterwards. Sometimes they are just confused and they ask their supervisors for second opinion. Trust in Allah and pray. Also order GCMS notes so that you can read if the officer made any comments.
Did you get any idea what was their major concern for calling u for interview?