RMA Invoice and Product Question

Domicio

Here is my situation: I live in Ireland and I bought a non refurbished Sonos Sub. The sub arrived in an open box with a repaired mask. I open a ticket with Sonos within 3 days after the product has arrived saying it is not right at all as they delivered a product different than what I bought. They agreed to replace the product and now I got an invoice (below) with a refurb sub, giving 100% discount.

Based on their policy they says: "Replacement products provided during an RMA are generally certified refurbished players, but you may receive a new product based on warehouse inventory. All of our replacement products come with a full warranty for your region and go through the same testing like our new players.".

With that said I have two questions:

1. As they will cancel the original invoice once I return the product and having in mind that I paid more than €699 for the brand new sub, are they not having an invoice breach issue here? They are sending an invoice with lower value than what I paid for. It doesn't sounds right at all!
2. Should the new invoice contains the same type of product that I paid for? (a non refurb one)

It seems to me that they are 1) breaching the finance laws and 2) breaching the EU consumer laws rights

*just to clarify that they are not refunding me any penny so I have paid the full price for a non refurbished product and then I got a RMA invoice for a refurb product

Domicio

How come that at the end I will be holding an invoice that has lower €€ than what I paid for with a different product described than what I originally bought? It doesn't seem right at all