Customer service

I recently changed insurance companies and the new insurance required me to have a tracker. I chose to use their preferred service provider Netstar . I went over early in the month. The call centre agent told me they will contact me within a week.2 weeks went by and no one called. On friday 25 Oct I called the call centre to find out whats going on. They said they call clients closer to the start date. So she got netstar to call me back on the same friday to schedule an appointment. I asked for the monday installation at 8 am as I have a busy week ahead at work. I got the mail confirming an appointment but not yet the time. At around one no one has contacted me for the installation so once again I had to contact them. She then apologised and asked if it can happen the tuesday and I said no as I will be in Foursways as i work in retail so i will be in a mall. Unfortinately i had to take a friend to the doctor after he had an accident in the morning so i had a bit of time on my hands as doc appointments take long. She then said okay 14:30. And i agreed as I managed to get home just before that. At 14:40 i called the call centre AGAIN as they gentleman has not yet arrived. Again they could not reach the other call centre and sent them a mail. The technician only arrived at 14:51. To me this is unacceptable. I am a new client. And i have to call after them the whole time. It is not how it works. If this is the service i am receiving I am scared to think if the service I will receive going forward or if heaven forbid my car gets ******. Companies fail to understand the importance of good customer service .