Under the various Sale of Goods Acts you do not need s receipt. As Proof of Purchase, when you bought the TV the Argos branch will have got you to fill in a form that is REQUIRED BY LAW. They have to keep a copy of that go to the Branch where you bought the set and see the Manager. Demand to see the form as Proof of Purchase. If they demure in any way threaten them with the Small Claims Court. That is usually enough to get a refund.
t, August 2008