radio warranty

on the 8th of January 2016 my car was booked in for a service, upon it being there I spoke to the service provider and told her there was a fault with the radio. It was taken out as it is still under warranty and I was told it would be taken in for repair/replacement. I called VW Thompson on the first week of February 2016 for feed back since no one called and was told my radio was in for repair and I should call *** for further information regarding the radio. The number happened to be VW CUSTOMER line were I lodged a complain. on the 8th of February I called the number again and was told that the lady that was supposed to book my radio just returned from leave and only will the radio be sent for repair on the 9th February 2016. I'm very dissatisfied with the level of service that I received from Volkswagen SA