Now having both gas and electricity on Suppliers of Last Resort (E.on and Shell) I was quite surprised to be cold-called by Scottish Power this morning with an aggressive "We can beat your quote" phone call. When I complained about being cold-called the response was "you signed up for it" which might have been true once, because I was with them a few years and a couple of changes ago. They eventually gave up when I declined to say how I selected deals, or why I have to date refused a smart meter.
E.on are currently pestering me by email to book a Smart Meter fitting, even though their web site says they only do this for dual fuel customers.