(1) | Notwithstanding the provisions of any law to the contrary but subject to any other powers that any court may have, if a contract does not substantially comply with any provision of section 3 or 4(1), or if a seller has contravened or has failed to comply with any provision of a regulation made under section 12, and a purchaser proves that he has in consequence thereof suffered any prejudice, a court within whose area of jurisdiction the accommodation referred to in the contract is situated is, if appropriate proceedings are instituted by the purchaser within a period of two years from the date upon which the contract was concluded, competent— |