First off I think it may be a good idea to wait a couple of days before making another effort. That wait would be a good time to find a spiny lizard or an earless lizard somewhere. And by find, maybe somebody here, or in your area has a spare in the freezer they can pack up for you.
Ask around... Or if you are in an area that they exist, hunt one up yourself.
Plan B would be to force feed, but that is an open invitation to injury for the animal, and stress for both of you. Plus there have been times that it worked, but it was the only way to feed the animal. Not a good long term plan.
As a last resort some breeders will give the animal away with a list of its issues. Nothing personal, but a slight change of venue can get a response too. Not that they will do anything any better, just a change.