Misrepresentation - ending a contract

[jamesaf87]

A makes a contract with B where A will supply goods for a year and B will pay monthly. A induced B into the contract through misrepresentation, it cannot be rescinded as the goods delivered so far cannot be retrieved - restitutio in integrum is impossible. All the evidence I can find suggests B can claim damages in lieu of rescission, but makes no mention of either party being allowed to end the contract. It would seem stupid for A to continue supplying goods and B to continue paying until the initially agreed date. Answer with reference to appropriate case if possible.