Appellate Practice Attorney serving New York, NY
You would sue the university to compel it to honor your contract by providing you with a diploma. The university will claim that you breached the contract by not paying, you will argue that you fully performed, and that the university screwed up. From whaq you've written, however, the breach occurred four years ago, and you may be beyond the statute of limitations, depending on which jurisdiction's laws apply.
Answered on Nov 07th, 2020 at 8:46 PM