Pathetic service at hyundai pietermaritzburg

After receiving such bad service from Hyundai. I returned to them the day after service of my vehicle because they had not replaced my sim card for my navigation. I was so upset that I was reduced to tears, it was just too much. When I queried my sim card the service manager just had an don't care attitude. He instructed the service clerk to call me back on Monday with a response from his manager after they had done an investigation, after me explaining to him that the service clerk had actually shown me the sim card and put it back in the vehicle. I then escalated the matter further to their Senior manager who was very pleasant and helpful. She approached the service clerk who told her exactly what had happened. As she was talking to him a member of staff walked past us and asked what was the problem. He said that he had quite a few on him and replaced mine in my vehicle. I was very upset. Really wish I could purchase a new vehicle after this terrible experience with Hyundai unless they get rid of the attitude of service staff or replace them with people who actually care about their customers. The previous day when I took my vehicle in I had to wait for over an hour to book it in and over an hour for delivery. Therefore I was late for work and only got home at 6pm.