@silberspur It is a short-sighted policy, I think - it excludes entire groups. I needed to return something recently and discovered that the little local shop has no regular opening hours and no sign with opening times. I finally succeeded in catching it open and was told the 14-day return period was up. When I politely said I had tried several times before but they had no advertised opening hours, they said 'we post them each week on Instagram'.
@CiaraNi this is, to put it mildly, an impertinence, and the fact that they do not accept the exchange can certainly be legally contested under these conditions.