Givenchy ankle strap sandals size 39.5

Brand spanking new Givenchy sandals from bergdorf Goodman purchased in February. Size 39.5 which is supposed to be a 9.5 but in my opinion fits a 8.5-9 to slight 9.5 . I had to repurchase to get a 40 as I am a true 10 and never went back to the store to return b/c of Covid This would come with original givenchy box, dust bags, AND the receipt from bergdorf Goodman to prove authenticity as I only sell authentic items These are so cute and minimalistic. Contact for other options