try a different store/person
got lucky with my local store and a rep there the first time I went in with my mogul and she said well, I don't think I can but I'll try since you have everything setup already, she scanned my ESN from the back of the phone under the battery and entered some stuff and I was ready.
I tried a couple other stores when my friend was wanting to do his touch and it took us a while to find one that would do it in his town but we eventually did.
It is sorta hit and miss really. Basically just try around and you'll find somebody.