With al respect can't you be more specific as it is easy to claim all kind of things of this nature.
-Why did the cost go up
-Who was the blame for that (sometimes it might be down to you as well...
I have seen a lot of people who came for a conversion who had all kind of US licences (even instructors) who were not up to UK standards and found that hard to accept)
-Isn't there another way to deal with this, you have just signed up under this identity and it looks like you have a chip on your shoulder.
In all be more specific please!