I'm deaf too
(Hearing Impairment FAQ by Mark D. Rejhon
Do you have a different set of hearing aids, to test with? (Just in case for some weird reason that its T-coil may work better with Bold) Or a different Bold, as it's possible that for some reason this specific bold isn't 100% compatible due to defect?
Also, check out Deaf Chat | People Deaf Culture - AllDeaf.com
's technology forums, and see if there are other Bold users complaining there...