Flipkart — Regarding installation problem of Havells fan against flipkart ...

Hi iam from chennai...this is regarding installation problem of Havells fan bought from flipkart on 22/4/2022...till now nobody came for installation...we paid a installation amount of rs..299/- called so many times customer service...but they are telling same thing within 24 to 48 hrs they will come..but nobody came even after one week...we asked to refund our installation amount...but they are blaming that warranty will not be available... We don't know what to do now... Because flipkart not sending the person and not allowing us to do installation..not refunding the amount too..pls help in this...and solve our problem