Swiggy Instamart — I didn't receive my order but they marked delivered

I order the quantity of 6 pc fortune mustard oil my order is ₹1144.80 but I didn't receive my order but delivery boy marked delivered i call him but they say give your 50m ago from your home but when he delivered my order i was in home . I already checked in cctv delivery not come in my society they telling lie . But when i chat and mail to swiggy they also ignore me