I told them I needed the passport as fast as possible since I had a flight to china to catch by the end of the month for a really important study tour. (I applied for express delivery 48 pages, 10 years, 8050 BDT, delivery within 7 working days) They claimed that I have filled many info wrongly and thus I need to apply again for the passport. Means I have to pay the 8K bdt again. They even told me that there are no ways I can correct "the infos I have wrongly written" and the only way is to apply again. I did not pay any extra money till the end. I got my passport by the end of the month after many re-visits and hassles and eventually missed my flight.