Check Engine Light On problems of the 2003 Toyota Avalon

Electronic control module (ecm) issue: problem w/ intermittent warning lights for air bag some time ago (researching date)- took vehicle to dealership. No more light, but vehicle began stalling/losing power while driving- rarely, but became more frequent over time. Instrument panel/check engine lights will illuminate- now every minute or so while driving. Other people have same problem- NHTSA id 10605681. Took vehicle to dealer late may. Dealer on phone w/ Toyota multiple times + had tech from another dealer come and look at vehicle - could not figure out what was wrong. Dealer now says the ecm faulty. Not repaired, but dealer wants to charge 8hrs of diagnostic time and not repaired - can dealer charge if recall item? my concern is that problem is more than air bags- faulty ecm results in loss of power/control when engine shuts down, stalls or experiences intermittent loss of power- vehicle no longer safe to operate. I cannot drive it; I cannot sell it. Called Toyota, asked for part # of recalled srs/ecm- was told only local dealer has part numbers. They took information and transferred me to "Toyota corporate"- operator id'd as Toyota corporate asked questions, indicated they had documented my file. When I asked operator to confirm items operator had chosen to document, operator refused to respond to my requests for confirmation- I asked for supervisor- was told "no supervisor" there. Operator threw me on hold (on hold for over 30 minutes w/ corporate then transferred me to NHTSA w/out operator ever coming back on the line prior to transfer (NHTSA conf # available). "corporate" indicated that Toyota has no control over dealers- they can charge whatever they want to diagnose even if related to recall notice. Loss of use over 1 month. Dealer said no new ecm replacement part available. Pretty sure recall remedy inadequate.