Intel — Problem in my power bank

Address:

Khordha, Odisha, 751007

Intel powerbank purchased 3 to 4 months before through flipcart is not working.The powerbank purchased is not working with no back up of power.while charging light is on, but when switch off and connected to mobile no charge is transmitted.I purchased the powerbank 11000 mah, but cannot find the bill or money receipt.
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[protected]@yahoo.com