Been having the same numerous calls, would pick up then the line would go dead. Once I picked up and then I heard a ringing tone as if I had rung the number and then an answer service picked up saying I had missed a call, but they would call me back. The worrying think is I have an all inclusive phone package where I don't pay for landline calls apart from 0845 numbers, so in effect as the line seemed to ring them back I think I will be charged for the call and they get some of that money!! Beware of this and if you hear a ringing tone when you answer I would just hang up. They managed to get through to me today and as above it was a company called Jigsaw Ltd claiming they could save me money on Local restaurants, cinema, wine, dvd & cd purchases and would give me £40 of fuel vouchers all for just £2 a week! Remember this is then £8 a month or £96 a year, just said smaller so it sounds smaller(typical sales technique, I often ask 'so how much is that a second cos that will sound even better!!). When I asked them what local restaurants were included they got hazy!! I told them I was part of the telephone preference services and they told me that some numbers always slipped through and every so often I should renew my membership. They may be genuine, but they are going about it the wrong way if they are buy annoying people to the point of anger before they even speak to them. Just beware, I normally ask for information to be posted to me and if it is genuine that should not be a problem but I slipped up and forgot so not sure what would have been the response.