Xiaomi India — Power Bank Is old and not working

I received the parcel on 7 sept 2015 and when i opened the parcel I found that the packing was not good . It was not looking like the new one. It had scratches on it and colour also seems to be dull. When I tried using it the performance was worst. I purchased the power bank of 10400 mAh and it could not charge my mobile single time also. Before mobile the power bank used to get discharge. Please give me my money back. This is my worst online shopping experience. Please check the products before shipping. The sellers are doing black marketing by sending the fake power banks. Please take some action as soon as possible or send me the new one or else I will go to consumer forum and file a fraud case against your company and make sure you pay a high price for this. I had registered a complaint on call with Complaint id - qrc43655499 on 8 sept 2015