Fast service n be careful. Review on Flipkart

Friends last week I placed a order of my favorite fone red me prime 3 s online by my friend s credit card on the day of Saturday and was informed to deliver in 3 working days so I was waiting but next day was Sunday. So order to get me on Tuesday or Wednesday but good thing of flipcart was that everything about my order was informed by sms. Good thing is sms came to me that u can get your order on Monday and can know status I got number when I called I got my fone Monday morning at 9.00am. So service is so fast but one real thing is one more when I went to buy my jio Sim on store. They told me that u can, the get your jio Sim I asked reason then they told me that your coupon code is already exists from it I said that I have bought it new. Then came to understand that flipcart Packers Can do so. So flipcart have to do something about this.