Best answer by talldave
Switching is a con. Attractive rate at first but actual costs soon outstrip original amount debited per month and a negative balance is soon a reality.
Switching is a customer choice, how can it be a con? Advertising false prices or hidden price increases might be a con. So how exactly have you been conned?
If you entered false consumption data into a comparison site and switched on the basis of its results then you have conned yourself and are presumably unhappy that you actually use more energy than you said you did?
From Pure Planet's perspective, the only price change recently has been a gas price reduction. I would suspect, therefore, that most of their customers would describe this positively and not as a con.