There are two legitimate ways sellers can get round Bloctel. The first is that they're allowed to ring if they're partners of a firm you deal with. Well, most of us are clients of EDF and Orange, so these crafty sellers simply sign up to be partners of one of these two. The solution there is to tell them you're no longer a client of EDF or Orange. The second is trickier, since they're allowed to ring you if their purpose is advice-giving, even if the advice you receive then leads to them making a sale. We had one recently on behalf of a clairvoyant, to which we had to say we weren't interested, and added that we thought their principal would have known this already if she is a good clairvoyant...
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Val says ah that is why so many are EDF