Swiggy — Order wrongly showing delivered

I ordered grocery from swiggy instamart on 25 December 2021 with order I'd[protected] worth rs 2219. The amount was prepaid online. They did not deliver me the order instead wrongly shown it delivered. They are not even calling me when I sent them mail. And are not helping me to get either refund or deliver me the order. Iam really tensed as the amount was big. Please help me get the refund or my order.