OnePlus India — Money not getting refunded nor delivered the ordered product

I had order one Plus mobile from One Plus India website on 17th Sept 2023. I had paid the money upfront and was confirmed a delivery of mobile on 20th Sept 2023. There delivery partner Blue dart showed confirmed delivery on 19th Sept. However since 19th Sept to 22nd Sept the status kept on changing and false status was updated.
I am yet to get my product and once I asked one Plus to cancel and refund my money they kept on asking to wait for 24 hours.
I am not getting the product nor money