SWEEX Keychain.
I ordered this for myself and, at first, it worked very well - so much so, that I ordered up several more as gifts.
Then I went on holiday for two weeks, came home, turned on the keychain, and it had simply stopped working - no amount of re-setting and re-starting, as per the instructions, made any difference. That was at the beginning of June.
Emailed Sweex and, after some weeks, got a response, in Dutch. Replied, asking if they could please explain in English, got back the same suggestions as contained in the manual (which I had told them I had already tried, with no success)
Several more emails, then Sweex told me to send the keychain to Giant Gadget, a company in England, which I did. After about 3 months of emailing them backwards and forwards, with very slow responses (like 5 weeks to reply to an email) they told me that they couldn't do anything about it, as it hadn't been bought from them. (So why did Sweex tell me to send it there? - I assumed that this must be their UK main supplier or similar) Giant Gadget wanted me to send them a further £3.50 for post and packing (for a tiny keychain?) before they would return it to me. I asked if I sent them this cash, would they send the keychain directly on to the other suppliers - that was in mid-November and I have had no reply to date (15 January)
Given the cost of the item in the first place, I've decided to give up, and forget all about it - which may, I suspect, be part of their tactics?
We have a Sweex wireless router which - at least to date - works fine. If it ever goes wrong, however, I shall just chuck it in the bin, and buy another make.
Customer service seems to be an unknown concept within the Sweex corporation and their associates.