Cahoot holding me to pay off full amount on card

The point I was making referred to the messaging on the page where you actually amend your Direct Debit. Of course this should be covered in terms and conditions. But not something you would expect to trawl when you want to make a simple amendment. Indeed the faq referenced above does not mention the case when you want to reduce the amount of the direct debit that I referenced in this post, and the fact that this cannot be done once the statement has been issued, even if given weeks ahead of when the payment is due. The very issue I think needs highlighting.