I received a very similar call from this company. They told that the device is required by the government as I pay more than the average for my electricity. Here is the website address http://powersavercanada.com/powersaverworking.htm
They asked for visa card details to proceed the order.
The caller name was Josh Mclaire -
[email protected] -email that does not exist Tel # 1-613-699-6193 ext 333
After reading this post I called them and cancelled my order. But they still wanted to charge me for the shipping cost, as the order was already sent.
Never in the email they mentioned that it is a telemarketing, and all the time told me that it is a government requirement.