That is bull crap and if I were you I would report them to the Better Business Bureau.  I think there is another agency but the name of it escapes me at the moment that you could complain too.  I have heard dozens say that their credit limits were slashed and that put them over the limit and all sorts of fees went along with that.  I wouldn't have any quams about calling them back and telling them if they don't fix it back to the old rate I am turning them in as mentioned.