They closed my account after I made a (relatively small) wire transfer after not using their service for a while. The year before I made much larger transfers that didn't seem to concern them. Suddenly I needed to provide them with lots of financial information.
The law sucks and I don't blame them for this. But I have provided them with more than enough information to prove all of my income is legitimate, including years of tax forms regarding the income and other crap they absolutely did not need to look at.
What bugs me is that they continued to ask me for this information, which took time for me to compile for them, and they ignored me anyway after I provided everything.
Another thing that bugs me is that (they claim) their support desk software is the most secure method of sending them sensitive documents. Ridiculous. The icing on the cake will be when their system is hacked and I lose a lot of important documents that I was under the impression they would be removing, but clearly haven't.