[***Mr D***]

I would fight this all the way.

If your confident you have done nothing wrong dont give up keep on fighting.

Write to the manager advising him you want to make an official complaint and to whom this should be written to, also keep copies of all letters you send. and take name of any phone calls.

I hate things like this and have had many a running battle with large companies, some have take over 6 months to be rectified.

Good luck.