OnePlus India — OnePlus India Mobile phone OnePlus 9RT Product not delivered and no status updated by One plus

I have ordered ONEPLUS 9RT 5G HACKER BLACK 12GB RAM +256GB STORAGE with an exchange offer of my old phone Oneplus-6 6gb ram and 64gb storage on 1st of July 2022 and after that i get estimated delivery date 4th of July 2022. i have paid Rs28000 through axis bank credit card on oneplus.in . today is 7th of July 2022 i have not received my order. whenever i called to Oneplus customer care number they said there is an issue from their end and my order got returned back to shipper and I was informed to reorder again after that no updated from their end. so they are not delivering my order nor they are not helping me in this . As a customer i feel i am cheated by oneplus india so kindly help me either delivery my product as soon as possible or refund my full amount which i paid. please help me

And When I am trying to order it again I don't see the offer now and which is costing more 6000 for me now to reorder.