Went shopping at Sainsbury's Maypole Sunday for Christmas cards wrapping gift tags etc plus pint bottle of rum and a few small gifts, we went through a maned checkout who was under pressure from queues and paid the £107 bill saying to partner that was a lot. Today checking receipt there was an item ' TF Ultra asst' at £21 ' not having purchased anything dearer than the gift bottle of rum I went online Sainsbury's to find the code, 45 minutes of searching and on line chat followed by phoning I returned to the shop. Customer services could not find an item for sale with the code on the receipt and suggesting the it could possibly be a SIM card or memory card and saying sorry I can't help you any more as you should of told the cashier at the time. So buyer be ware, always check your receipt while in store Every time. They won't even find the code from the programmer, I'll put this down to experience then.