Swiggy — Refused refund for the undelivered food items

Address: Chennai

On 14 th August I had ordered 3 foods items from SS hyderabad Biriyani Nungambakkam. I paid Rs 1080 as the bill amout.The ordered items were
One Executive chicken biriyani
One Hyderabad mutton biriyani
One Chicken 65
But they had delivered only one item. Only Chicken Biriyani. Immediately I registered a complaint through Swiggy s customer care service. After so much deliberations they refused to refund for the undelivered items for which I had paid without giving any reason.
None of the company executive s coming forward to resolve the issue.