Renault bad service

On the 07 November 2018 i had a car breakdown where the car was Towed to Centurion Dealership. At the dealership i was told that it is mixing oil with water and that they maybe a problem with the engine.The problem is that in October last year i had a similar incident where i had to replace the engine and now it seems like the same problem has occurred.

My concern is that i am experiencing this engine fault for the second time and considering that my current engine is new it does not make sense for it to have had the same problem. I called and emailed Renault customer service spoke to the lady by the name Lucy but ever since our last conversation on the 14/12/18 i have not receive any response from her or Renault, i have tried on numerous occasions to contact Renault both on phone and email but no one is getting back to me. My car is still at Renault Centurion and i was told that they are going start charging me storage fee.

This is really frustrating .