Argos come under the distance selling regs.
they HAVE to take back an item if your returning it purely because you dont like it.
you havent seen the item in the flesh before paying for it.
If your local branch try not to, tell them they are wrong and take it further up.
(i'm an ex stockroom pixie, argos was an ace job 😀 )
[edit] unless it has memory in it, for the above reason (pre 2002 they took them back, but we were getting a few cameras loaded with porn each week!
not all members of staff were tech savvy enough to be confident the cards would be erased properly, and even if they were full formated, the images could still be retrived if you knew what you were doing) or are things like earrings.