OnePlus India — Order canceled by deliver partner no refund given

I ordered a one plus 10T device from one plus website on 22 October, the product was scheduled to be delivered to customers address by 31st October but the order was cancelled when it was out for delivery, now the product reached back to the one plus warehouse on 31st October. It has been 3 days my order is still showing shipped and no refund is granted yet. They are violating their own rules and guidelines. They had mentioned the refund will be initiated within 24 hours of product reaching the warehouse but it’s already more than 3 days and my money is stuck with them.