Just been told by Quidco that Best Buy have declined my cashback as they have paid that amount to another site. I definately went via Quidco to make the final purchase, though I had looked at the site from HUD. Of course Best Buy do not accept queries on declined claims. Very worrying as I have lost a lot of money on this deal. I will be very wary about using Best Buy in the future. Has anyone had caskback?