In short, we aren't.
MoneySavingExpert.com is a free-to-use consumer help site. We don't charge anyone to use it. We don't sell anything or provide any products, and you can't pay us money. If someone from your bank’s said we’re charging you, they’re wrong.
Don’t get other companies confused with MSE.
If you've searched for a company on Google and found yourself on our site, it's likely someone’s asked a question about the company on our Forum. It's a huge source of info and discussion on money issues, and many people come to it for help.
This is nothing to do with us, sorry.
Please read Martin's blog on this, as it may help clear up the issue for you.