A friend purchased a second-hand Activa from a dealer who failed to disclose significant engine damage. After paying a substantial amount, the vehicle broke down the next day, revealing the extent of the problem. The dealer is now refusing a refund or to take back the vehicle, despite the RC not being transferred and the agreement's terms being unfulfilled. This situation calls for legal action, with suggestions including amicable settlement, approaching the consumer forum, consulting a local advocate, or lodging a criminal complaint for fraud and cheating.