Air India Express — Request for full refund against delayed flight (14 hours)

My flight from dubai to delhi on 3rd oct has been rescheduled to 2 am on 4th oct. Customer care is not issuing a full refund on this neither confirming me on providing accommodation arrangements for this. Please assist, i want to cancel and get a full refund so that I can book another flight or at least provide stay/food arrangements for the delayed time.