What should a buyer do if they find undisclosed issues with a property after purchase?

If a buyer discovers undisclosed issues with a property after purchase, the appropriate action would be to file a complaint with the Real Estate Commissioner. This is because the Real Estate Commissioner has the authority to investigate and take action against real estate agents or brokers who engage in fraudulent behavior or fail to disclose pertinent information about a property. Filing a lawsuit for misrepresentation, option B, may be a costly and time-consuming process that may not result in a favorable outcome. Contacting the property's previous owner, option C, may not be effective as they are no longer legally responsible for the property. Asking for a refund, option D, also may not be a viable option as the buyer has already purchased the property and the seller may not be obligated to provide a refund. Therefore, option A is the most appropriate and effective course of action.