Flipkart — product not delivered but status delivered

I placed an order for a mobile on 7th August. I got an update that product delivered on 9th August which actually I do not receive and I put a complaint on 10th Saying that product not delivered. Flipkart say that they will resolve the issue by 14h August. I keep on ask about the status and flipkart customer supports guys say that it will be resolved by 14th.
When 14th August passed they said wait for one day that is 15th. Again on 15th they called and tell on that wait till 17th. Today they said might be it will take 48 hours more. Do not know how to move further