Indigo Airlines — Flight missed due to negligence of Delhi Flight crew

Address: New Delhi, Delhi

This is with regards to my flight from DELHI To PUNE. This incident which happened with me by a company who is considered to be reputed is completely unacceptable.
I had booked a round trip flight from PUNE-DELHI and DELHI-PUNE dated 3rd March to 6 march, the return flight from DELHI-PUNE being a Indigo Airlines flight 6E-643. I was supposed to reach the boarding gate at 4.35 am, flight being scheduled at 5.00 AM.
I had already checked in through web, and had a boarding pass with seat number already selected.
I reached airport by 4.10 am and went to the check-in counter, the staff there was very non-cooperative, moreover the lady at the counter took my boarding pass and started checking-in for other customers, I was continuously asking her whether I can directly proceed for the security check or do you stamp in pass here, because at other airports generally there is a different counter for web-check ins, she wasted my 10 mins, and it was 4.20 when she yelled at me and told that mam why are you waiting here, you need to be at the security check, it was 4.20 and she sais, you have only 15 mins to reach the boarding gate, if you do so, you will be allowed to. Then I almost ran and completed my security check and reached the boarding fate at 4.30 which was 30 mins prior to the flight time. the lady at the gate had just closed the gate as bus towards flight had just started, I asked her to allow me, she completely closed the gate and started ignoring me. I was asking her from outside the glass to at least listen to me, that there is almost 30 mins of time still left and as per rules I can board the flight, she just left from there and wasted my remaining 5 mins, then I called the manager and asked him, he was like mam you cannot board the flight now, which was extremely annoying. and I had missed my flight already, as he wasted my time in arguing rather than helping me there. then I asked him for the next flight, he said that you need to check at the H2 counter of airport. there one person escorted me for exit to check in counters. There I was at H2 counter with many other people with the same complaint. No one was sitting at the H2 Counter. I asked the lady at the other counter as to whom to contact she asked me to contact the D2 counter. I went to the D2 counter to check for the flight change, but then again the staff was not answering properly. I was waiting there for almost 15 mins.And no one was responding. I started asking for the exit from airport so that I can check flights for other timings and other airlines as I had to reach PUNE by 2 pm. The staff was very rude and the service was very disorganised. I finally had to escort a airport police and ask for exit from airport. only after that someone from the indigo airlines came and I got the exit.
This was very horrible experience and my friend too had the same experience from Bangalore airport as well. the staff is extremely rude and instead of co-operating they are completely ignoring their customers. I am very unhappy and I missed my flight which costed me loose my important prior commitment at office. Moreover I need a refund and need strict action against this airlines for harassing people and being non -cooperative.