Spicejet - Want compensation for cancelled flight

I was supposed to travel from Delhi to Goa on **th March at **:** am flight. Due to operational reasons, my flight SG **** got cancelled and I got this information just ** min before my departure. So I rushed to customer care office at Terminal * (from where my flight was also scheduled to depart). The lady there was very rude to me & she exercised partial behaviour also. She gave tickets to two men in the next connecting flight who came after me.
Just because of her this absurd partial behaviour, I had to book my tickets in another airline (Indigo flight) on the spot and I had to pay Rs.*****. I want the compensation from SpiceJet which is the amount I paid on the spot to Indigo.