Express consent to be called using an autodialer can be revoked at any time, says the U.S. Court of Appeals for the Third Circuit. On August 22, 2013, in Gager v. Dell Financial Services, LLC, the Court attacked a common understanding of the Telephone Consumer Protection Act among many creditors and debt collectors: Once a debtor provides his cell phone number to you, you may call him at that number using an autodialer or prerecorded messaging for as long as the debt is owing.