bad after sale service

we bought 2 vehicles i10 and IX35. Reported i10 3 times noise at dashboard and radio not working. 3rd they put in new radio, so they said. <br> <br> 18 March went to collect i10 again and reported that the IX35 has rust on it. I had to take the IX35 in on the 21 March and showed them the rust and also reported that the noise is still in my dashboard.<br> <br> I haven't heard from Hyundai Brackenfell again and still waiting to fix the 2 vehicles that is not even 1 year old