Ebazar Ninja — Different product received

Hello sir
I have ordered a mi 20000 mah portable power bank from ebazar ninja through online on 8/5/2017. But the product delivered in 12/5/2017 is different one and the company name is mentioned in the product as allone (It's solar power bank) i've tried several times to contact the customer care. But no one picking up the phone. I want to return the product and get my money back or send me a proper mi brand power bank. Please help and resolve the issue in priority.
My order details is below
Invoice date : 08/05/2017
Invoice no: oid381355
Code: 234076
Vat/tin : [protected].