Ipro — ipro power bank

Ipro power bank is not working.
I brought ipro power bank 28000 mah 4 months ago through the flipkart. Now, it is not working. I want to replace the power bank or repair it. I have warranty card. I am very disappointed with flipkart order id: od[protected]
Invoice number # fab2pa[protected]

I don't have nearest service center in my area. Please help me.