Gretchen sorry to hear this. Last night I got a call from MCI offering me a deal with Delta miles. The telemarketer who called sound like a sweet little old lady and she almost had me convinced that MCI had changed for the better. But I promised myself never to sign up with them again after the last fiasco 4 years ago and I came to my senses and told her I didn't want to be switched at this time.
If it were me, I think I'd just threaten to switch if I didn't get the promised miles. But perhaps you've already told them that.