Update:

Elisabeth from customer service was incredibly helpful and came back to me with a resolution.
Thank you for your help, I’m glad to see Sezane cares about his customers.

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I have purchased several things from Sezane and the quality has been great. Unfortunately this has changed recently as I purchased a wool sweater which quality was very poor, constantly losing threads and felt like it was desintegrating itself. I was only able to use it once as, even handwashed, this excessively shrunk and lost more threads.
Unfortunately when I reached out for help I was asked some questions regarding care and immediately denied help with no further compensation despite describing something was wrong to start with.