Reliance Communications — reconnect power bank

Address:

575004

I bought a 20000 mah reconnect power bank from delhi jio store for which they said one year warranty. I bought this on july 1st 2017.. After 3 months cable died.. I bought local ones as jio store has no cables.. After 3 months, power bank became powerless as after 12 hours of charging, my phone can be charged only 50%. I live in mangalore and when i went to jio store, i'm sent pillar to post.