Imessage gets email from account not associated with it.

Question

iMessage gets email from my exchange email account I do not want.  This is not my apple id, nor is it associated with my imessage or facetime.  Nothing stops the problem. There has never been any email associated with my imessage account.  I added then deleted my apple id association from the iphone iMessage account leaving nothing but the phone number.  Turned off phone and restarted.  No help.
I have upgraded to ios 6.  It happened it both operating systems and has gone on since I bought the phone 1 year ago.
There are 5 email accounts including the culprit exchange account on my iPhone.  Only the exchange account ends up in iMessage.
I deleted the Exchange email account, then restarted the phone, then left it for 4 hours.  Restarted the phone.  Readded the exchange account.  It stayed clean for 1 hour then the flood of exchange email started.
Even with iMessage turned off the email arrives as a text as if by magic.  I checked my bill and the email "is still being sent by iMessage, even when its off!", as there is no sms charge as should be when iMessage is turned off.
This application has gone rogue on me and no one else I know has this problem.  My work email is exchange and I get over 100 a day.  Its a flood.  Plus text messages must be deleted one at a time!
How do I stop the monster. 
Help. 

Answer 1

I did not lose my contacts but my carrier support could not confirm prior to executing the above steps.
I believe the reason your carrier is handing off to Blackberry on this is because the Blackberry ID is managed by Blackberry, not the carrier (I am not 100% on this). As such, they can't authenticate the BBID. That can be handled directly by the user here: http://ca.blackberry.com/bbid.html. Permission issues are always a pain.
IF BBM won't behave following the solution that worked for me, I would call your carrier one more time and ask them to escalate the service tag to Blackberry. Without the service tag, its tough to get action. This allows the carrier to hand you off and creates the support trail needed for effective resolution. Push to get the service tag.
In my experience on this, there was enough "grey area" for all support techs involved that Blackberry would be well suited to increase the knowledge base/training/support  to provide a smoother resolution. When support tells the user that the main messaging platform, for the top end device, won't function and "there is nothing we can do about it", I believe the user has not been serviced appropriately.