The fate of a case that could pit thousands of H&R Block customers against the national tax preparation company is now in the hands of the Pennsylvania state Supreme Court.

Yesterday the justices heard oral arguments in Basile v. H&R Block Inc. Last March, the Superior Court overturned a Philadelphia Common Pleas Court decision granting summary judgment to the defendant in the case, in which customers allege H&R Block failed to disclose that its “Rapid Refund” program is really a high-interest loan.