Bad customer care

I took my Renault Kwid Dynamique to the Renault Service;; station to look why my aircon/fan stopped working. My car only had 8000Km on and is still under warranty. They kept the car the whole day just to replace a fuse. One day later the fuse blew again. I insisted that something is not right because a fuse should not just blow. I took my car in again...this time they put in a fuse with higher ampage. I insisted they make a note of it because I felt something was wrong and that was the reason the fuse blew. Well here we are again. 2 days later and the higher apm fuse blew. They want me to bring the car in again. How can I trust them to do something right now? I tried calling the customer care but the number rings and goes dead. No help at all. Very disappointed.