Disappointed

I recently received a gift for my birthday which I wanted to return. There was a gift receipt in the box but I was not aware that you had to return within 14 days. I was unable to go into a store as I was working and was then overseas for ten days. When I got back, I went in to return and was told that it was too late. The gift was bought on the 14th of September which is not even a month yet . The gift is still in its box and I am now sitting with a very expensive buy unwanted gift. I have been a loyal customer for years and just feel slightly disappointed that Truworths are so inflexible.