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Well, well. It turns out we were on Zero Variable and they are continuing a Zero but it is a Zero Fixed. However, it is a fixed rate for consumption for only one year so, ladybirder, you seem to have struck lucky either by beating some deadline or simply been given privileged treatment. We will now be on this tariff for the coming year and no doubt then we will have to go through the hoops again. This now looks most likely to be something that will cause some to accept paying, either through inertia/inactivity (not looking into things just accepting what is dished out) or by actual design (supplier sets a trap - the very thing so often complained about).