That's what I'd do. Expecially if they have a 5-day-free trial. Set up a new, similar one. Maybe even point it out to them. "Oh, no thanks, you can have it. Best of luck to you!" type letter.

Then wait. If they're using the free trial, chances are they'll see you're not going to play their game and they'll give it back up. Worst case scenario, you end up with a different domain, but you make those you-know-what's have to pay for a domain that you're not interested in buying.

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I'm like one of those idiot savants...well, except for the savant part.
"In order to increase awareness of the homeless, security have been given binoculars."