India Post — package stuck in chennai (madras) air

Website:

www.indiapost.gov.in

On 29th December, 2018 the seller shipped my Xiaomi Mi Box S to India, On 4th January The item has been Recieved at Chennai (Madras) AIR. My Expected Delivery was 12th January, 2019 and almost 2 weeks over my Product is still in Chennai (Madras) AIR and not Moving Forward. My Tracking Number is RB[protected]SG. Another point to note that the product is not retained by customs for unspecified reasons. Kindly Deliver it Fast Thank You