Amazon — delivery issue

Address:

Bangalore, Karnataka, 560037

My name is gopal shai as i orderd mi y2 mobile phone date on 26th june after confirm my order 27th is my delivery date, but continuously 27 to 30 we follow up my order they continuously post phoning without the reason, still not received everyone saying will try and nobody is giving reason of delay. And they provided courier agent number - [protected] name is saddam bappon after so many time i tried the call he is not responding only there is fake create the number still completing 4 days they are not provided the solution???