Spice Jet Airlines — put wrong reporting time.

I had a fight from bangalore to mumbai at 7.50 am on 11/08/2017. I reached the counter no 58 around 7.00 am. Senior assistant named jasmine was very rude and didn't allow to check-in. After 10 mins of denying she asked my name. During all that time i could clearly see the boarding time getting reflected on screen and final call was yet to be announced.
There was no senior person to contact. No body was there to help. That lady continuously denied for our boarding. This is really ill experience. I have never missed any flight in my lifetime but due to her arrogance and non cooperation i missed it. I wish i never have to travel with spicejet again. I want strict action against this lady and refund back the amount.