the shop that you bought it at was Tesco. Technika is a Tesco Own brand. Additionally, by law that have to have made a record of when you bought the set.
Take it back to Tesco and demand to see the store's General Manager as you have complaint.
Tell him/her that you are disappointed that they won't honour their warranty but if that is th case, then you are returning it under the Sale Of Goods Act.
Under the Act, goods have to be fit for purpose and of satisfactory quality. A box that fails in under a year is clearly neither and therefore you want a refund.
T
June 2009