Delhivery — Delhivery delivery agent did not contact me and order has not been delivered till today

I ordered something from flipkart and
my order was to be delivered on 20th october . But no one contact me, no one tried to reach my address . I raised a query and they told me delivery was attempted on 20th october and wrong information was displayed on order tracking page. The only thing they are providing me is estimated delivery date every day but order is not delivered till today. Mabybe it's, because i ordered something from flipkart which was limited in stock .