croma - order delayed and not delivered no cancellation or refund

ordered a hard disk in croma website on *th oct, assured delivery was on *th oct.. since *th oct until today **nd oct, everyday I have been contacting their customer support on the delay, but they say the same thing daily that they have raised a ticket a needs ** hours for an update, each day they are also sending whatsapp messages saying order is delayed to next day.. its been *weeks plus now and this has ruined my peace of mind, In spite of asking to cancel and refund the full amount they are keep on dragging this and everyday communicating with them is very stressful as they are just repeating the same script and extending the delay further.