Advice for everyone never to buy such a poor vehicle

Just 1 month after purchase, engine malfunction light started glowing. Took vehicle to local dealership and light went off. Soon it glowed again and engine started excessive vibrations and jerks. Took again there and they kept it there for about 10 days and said some parts are replaced. After driving of around 100kms engine started emitting some burning smell. When I lifted bonnet and engine cover I am finding oil leakage from somewhere. I'm frustrated now as what to do as no satisfactory response from dealership or company. I would recommend no body should ever commit such a mistake of buying such a defective vehicle.