Granny Goose for season duvet poor quality product

I bought a Granny Goose four seasons duck down duvet from @Home store in Eastrand Retail park. As this was not my first Granny Goose four seasons duvet I was certain that I was buying the best that money can buy. How disappoint it was to experience the polar opposite. I don’t know what happened with the quality of this product but on a daily basis what I experience is that each time I make my bed feathers and dust are released from the duvet leaving my bedroom furniture filthy. This forced me to clean and dust off my floors and each piece of furniture in my bedroom on a daily basis. As a person with sinus infection I feel that my well-being is compromised on a daily due to the dust caused by this duvet. I reached out to Granny Goose and was told that they have a process where they can take my duvet for assessment so that they can sew it up again. The unfortunate part was that they have a massive number of returns that need to be reworked/sewn up so they can’t advise when they’d be able to accommodate me. This leaves me in a huge predicament. Given Granny Goose product prices you’d expect to never experience such issues stemming from a below average product quality. My old duvet which could easily be 10 years old seems to be of much better quality than this new and way more over priced duvet.