Its not that you cant get your bank charges refunded
up to 6 years previous.
Its the fact that there are companies out there that
will say they can do it on your behalf,
but you could be charged for there services and
you could end up with very little out of it.
You can do it your self, and you can recover the costs
your self. It is easy, there are pre prepared forms and lots of
information about the processes.
CONSIDER doing it for your self for FREE
This link shows you how to do it for free Click Me Link
Claim back 100% for your self.
If you decide to use a company as a service then ensure
you have the fees and costs in advance. Or you could have
just made a company richer than you.