Swiggy Bundl Technologies Pvt Ltd 125 - Swiggy refused to refund the amount

Ordered stationery items worth Rs ***-/ on **th April ** and paid online. While ordering by mistake I selected my old address which is **-**km away from my current address. So I connected customer care and asked for help. I told to provide the credit note so that I can reorder. They refused for refund and cancelled the order and charged ***-/ as cancellation fee. When I have not received the product then why I should pay for it. Swiggy should charge some cancellation fee and refund the total amount. I wrote several emails but they are responding the same thing no refund policy.