I think your plumber must be mistaken. This is not Bradford White! We are a group of professionals who offer free plumbing advise to anyone who asks. As far as your problem goes your plumber should know all you have to do is contact Bradford and they will handle your claim. I only have the number for Bradford Whites main office in Pa. 215-641-9400 Give them a call I think they can help you.
Good luck,
Scott