Cashbackkart — order defective

I have received the damaged product and want to cancel my order. my chord is not working and i have received the powerbamk of sony instead of miplus.
I ordered a powerbank and a Bluetooth chordless and while i received the product i found that the.the chord of the powerbank is not working... And the powerbank which should have been of miplus came our to be of sony..
I want to focus your attention over here
Please refund my money . I never knew that your company is a fake one i want that my problem received very fast..