[Resolved]  Flipkart — delivered wrong book and delay in new book now

Sir, i had placed an order of "spectrum a brief history of modern india" book on 18th march but unfortunately i received wrong book i. E previous edition (2016) and what i ordered for 2017 edition on 21st march. I then assured by your executive that i would get right book till 28th march as i requested for replacement of wrong book but i didn't get any book till 28th and i thought i should wait for more days but they cancelled my order on 31st march without informing me or without contact to me. I called to executive and request him to lodged a complaint of no delivery and resolve my issue. He assured me that my issue will go to concerned team and i should wait till 7th april. Concerned team didn't contact me and i got new msg that i should wait till 8th april 5:30 pm. I agin called to executive and he accepted my return request once again and again assured my to get my order till 13th april. Again i called him on same day two times and on 14th he again told me that your issued will escalated to concern team. Today is 15th and i got new mail at 4:19 am that my ordered is cancelled. I called to executive again today and she assured me that my issue escalated to concern team and resolve by 18th april 4:30pm.
Sir what i should do right now. What is going on with me. I am your regular customer with different accounts. I always prefer flipkart. This is my worst order. I m really very disappointed with this. I m preparing for civil services and this book is very important as far as this exam is concerned. 1month hv already wasted my time on this issue. 10-12 executive assured me to solve this issue. Please dont do this with student atleast. I m very upset sir plz solve my issue as soon as possible.