No customer care

<p>I serviced my Hyundai Accent at Hyundai on 5 April.</p> <p>I waited for the car's release. They eventually said that they will email me the invoice. I am still waiting.</p> <p>The car's performance does not feel as before. My fuel is now 9.3 lt per 100km.</p> <p>The ECO light sometimes does not show.</p> <p>Their customer service has not called me to hear if I have any any issues after after the service.</p>