Amazon India — delay on delivery

I have pleased one order on 1st july. My delivery date is 10th july to 11th july. I have wait for call till 6.30pm but they didn't call me. Then i called to coustmar care they said that it went to another center they will deliver on with in next 2 days. I already planned my journey at 11th july. I have journey at 9.00pm. What can i do. First they told me that my order delivery at 11th july that's the way i booked my ticket