Bad after-sales service, beware of false promises

Here is the most recent issue:<br> On 17 June 2015, I called in to book my car in for the following and I was given a service date for 24 June 2015.<br> <br> 1. Wiper blade replacement (both front and rear).<br> 2. Re-application of Crystal Fusion on my windscreen (This is a product that was sold with my car last year).<br> <br> When I came to pick up my car, I was told that the product does not apply to me. I remained calm and requested to speak to Marius Liebenberg who sold the product to me. He apologised and confirmed that the product was sold to me and it should be app**** on my windscreen.<br> <br> The total amount of time I spent on the car that day was 3.5 hours (including drop off and pick up and the floor time at your dealership). This was almost half of my working day. <br> <br> Why did I not receive a call before bringing the car in that no work on Crystal Fusion will be done? <br> Why couldn't your service staff call me to discuss this when the car was with them for the whole day on 24 June 2015?<br> <br> Marlon Vee****n (the sales person who sold the car to me) called me on 25 June 2015 to apologise and promised that it will be sorted out asap. I have waited three weeks and I have not received any call, sms or email.