Very useless

I am really not happy with the service from Renault Zambezi, i took my car for service last year and told them there's an oil leak, they promised to attend to it. When i fetched the car it was still leaking. I was accused of being involved in an accident hence the car was leaking. I kept nagging for them to fix it but every time I leave the workshop the car is leaking. Yesterday i took my car for service, boom thr leak is worse. I have never been happy ever since i bought the car there