DON'T TAKE YOUR CARS TO BE SERVICED AT ATHLONE TOYOTA

I had the worst experience ever as we speak. I brought my car which was due for service, paid close to R3,000 (Toyota Aygo- less than 60 000 km) and got the car back the same day. A day after my car didnt start, took it back only to be asked to pay more money R1 500 because now 'there is something else wrong they did not discover'. My question is ,... what type of service did they do which does not show if there is something wrong with the engine (let alone a starter). Did I mention that I have been driving this car without any problems until I brought it to them for service. DON'T TAKE YOUR CARS TO BE SERVICED AT ATHLONE TOYOTA... that's my advice. This branch is going to mess up Market Toyoya brand. I am so upset.