Seller advertised "childs ski mittens 2-3 years" but I received babies age 1 mittens. Seller neglected to mention the age 1 label inside the mittens and says that because they fit her 3 year-old dd she was justified in listing as 2-3 yrs. Seller is offering refund for the item but not postage. Am I being unreasonable to expect the seller to refund the postage too? It's not the money it's the principle! Help!