Rajeev Sharma — Defective charging Adapter

I buy a Redmi 1S from flipkart on sept 2014 after four months my charging adapter not work i.e not charging my cell phone i contact customer care and they assure me that anew adapter is delivered to me within 15 days but from Dec 2014 to till ate i am waiting for adapter .I call customer care every 15 days from Dec 2014 to till date but every time they told me that the adapter is delivered to me