You will, in this case, need to refund the entire item, as individual products are not eligible for exchange or refund.
N'ọnọdụ ọ bụla, ị ga-eziga ihe ọ bụla na-enweghị kọntaktị mbụ, dịka a gaghị atụle maka mgbanwe ma ọ bụ laghachi.