#ATT unlimited data, NOT

So if you thought you had unlimited access using ATT cell service, think again...I received notice today that I exceeded their 3GB data limit for the month and my connections would be throttled from now on, I was told, "Sir, you have unlimited access, its just the connection speed that will be slowed down."
   I'm grandfathered in on the unlimited Data plan from the original iPhone offerings from years ago, of course I can upgrade to the $30/month data package which is also limited to 3GB.  I'm not a happy camper at the moment...Guess I can go back to 14.4?