u/Mobile_Degree7027

I bought a pair of Tom ford sunglasses in store yesterday for my dads birthday, I went to return them today and they were in perfect condition everything still there apart from the box which was never provided for me, I asked to return and they said due to them being a “display pair” I couldn’t return them? Is this correct I’m not sure if this is true but any advice or help with it would be nice thanks!