Ebazar Ninja — Mi power bank 20000mah

Address:

110092

I bought mi powerbank 20000mah thought it is an original . But I received a powerbank which has no full details of it like originality, how to use, brother or instructions from company . It's not stood for originality test.
They gave a Land phone number "[protected]” but no one is responding for returning of this item. Just a computer voice taking n after some time disconnecting automatically