Nope, that's a problem about the warranty and customer support policies of Blackview, not the seller.
I have a business selling products myself so I know. When a customer buy a product of ours from a wholesaler, and the product is faulty, he's requested to send it back to us directly for replacement. We ship them a pre-paid next day delivery label and box. All they have to do is put the product in the box, ship it. And wait for a replacement in 5 days. That's customer service.
If the phone is still covering the warranty time, you can contact the re-seller to get replacement and we will offer support to the re-sellers.