I sent my £100 cashback claim in Sept 2012 -having followed all the instructions clearly and posted it within the correct timeframe. They emailed to confirm receipt a few weeks later. I heard nothing for weeks and tried to contact them a few times but always received an automated response instead, which doesn't really tell you much. Then I received an email in December stating that I had not sent the documents in time and it had expired. Fortunately I have proof of postage and kept all the emails etc. I went on to their website and put in my invoice number, where surprise, surprise, it said my claim has been successfully processed! I have tried to contact their 0843 number as advised and no matter what time of day I call, I'm always number 9 or 10 in the queue. Once I managed to get to number 1 in the Q but a recorded message said that they were unable to take my call - after holding for half an hour. I think the cashback will be useful for my phone bill! I will be reporting them to Which?, Martin Lewis and BBC Watchdog or trading standards as I seriously smell a rat...... shame on Samsung....... £100 might not be a lot to them, but it is to me.