I have a defective XG1v4-A (Arris AX014ANM) wired 4K DVR and EVEN THOUGH THE EXACT MODEL WAS REQUESTED, THE WRONG BOX IS SHIPPED.

I have a defective XG1v4-A (Arris AX014ANM) wired 4K DVR and EVEN THOUGH THE EXACT MODEL WAS REQUESTED, THE WRONG BOX IS SHIPPED. How do I get the right box? Stores tell me they can’t get the XG1v4. Calling comcast tech support and they ship the wrong box. Each time one is shipped there are charges for initiating it and shipping. This is beyond frustrating!!