new car with engine noise

I bought a new hyundai grand I 10 at hyundai Bela bela branch. The day we took the car I complaint to the salesman there was a noice in the engine. The salesman said to me no need to worry you have a engine warranty. I have been back several times and they have taken 2 sound recordings of the noise and opend the engine and measure the shims. I was told that hyundai sa will listen to the noise and will send the parts to fix the problem. For the last 3 months nothing has happened. The noise is getting worse. I have spoken to the mechanic and the secretary and was told I need not to worry I can drive the car like that. I am very disappointed with hyundai after sale service. I am to scared to drive out of bela bela because I dont have faith in this vehicle. ( I bought a petrol car and not a diesel)