Oh dear, so sorry to hear that. Should you had bought it in Ferragamo boutique itself, you possibly can always highlight to the staff. I’m sure the staff can be glad to change it for you. If the product is just not up to quality standard, they won’t sell it to you. Instead, they will send it back to their HQ.
Once I fell in love with a Chanel handbag in Singapore & spotted a small stain. I highlighted to the staff & requested for one more piece. Sadly, that was the only one left & they refused to sell it to me even tho I said I do not mind since that was the last one. They explained they cannot sell if the item if faulty or not up to quality standard. In the long run, I had to wait for an additional 3 mths for them to get another one for me.