Eon or eeyore?

More consumer misery...
I take a call on my mobile from someone who says he is from the energy firm E.on. It goes something like this:
He begins: “Is that Mr Baker?”
Me (wearily): “Who is this?”
Him: “I’m from the customer winback team at E.on, and as a valued former customer...”
Me: “I’ve never been a customer of E.on.”
Him: “Oh, is that right? Well, I just wondered if you could tell me who your energy supplier is at the moment ‘cos I want to talk to you about some special deals...”
Me (even more wearily): “Do you seriously think I’m interested in doing business with someone who cold-calls me, on my mobile, at work, and tells me I’m a former customer when I’m not?”
Him, laughing: “Oh, okay, then. See ya.”
Dismal.