Does anyone know what the return policy is when buying from Selfridges or Harrods? I know that from Chanel standalone boutiques (e.g. New Bond Street, Sloane Street etc) it is exchange or for credit note only. I was also told that the credit know can only be used in standalone boutiques only and not at Selfridges or Harrods. Can someone please confirm this? Also is it the same at Selfrdiges/Harrods where it is exchange only or can they give full refund for change of mind etc?