Assured product not deliver on time Fake Promise!. Review on Flipkart

I don't know which type of product is it.but here I am going to explain flipkart service is very worst now.i didn't got any product on time. Everytime it has this same issue of delay, ordered this product and it's last delivery date is 17th dec.i waited till 8pm and but still didn't got any updates of my product. My order id is - OD607859566139954000 .I also contacted customer care service they easily canceled my product and said that they have taken my complain but this is fake they didn't provided me any complain id or number.how I believe that. Really this is very horrible thing that had happened to me. One more thing this product is a FLIPKART ASSURED PRODUCT i.e. they will priortise it to deliver it on Time and see again not on time .This was worst experience I had ever got.maybe in future I would doubled checked before placing any further order .Really disappointing flipkart.