Indigo Airlines - IndiGo cancelled flight less than 24 hours before departure causing financial loss

My IndiGo flight from Delhi to Pune (PNR A*DPHW) scheduled on ** December **** was cancelled by the airline less than ** hours before departure due to operational disruptions. No suitable alternate flight was offered at the time of cancellation. Due to unavoidable commitments, I was forced to rebook travel on ** December **** under PNR H*PB*G at a significantly higher last-minute fare. This resulted in a financial loss of ₹**,***. Although a refund and a small voucher (₹**** per adult) were offered, this does not compensate the actual loss caused by the airline’s cancellation. Grievances have been raised on AirSewa (RQ******) and with DGCA. I seek fair reimbursement for the loss incurred.