Unhappy customer due to poor service

After setting an appointment well in advance, in about 2 weeks in advance, it was arranged that I come for a part replacement (a probe). Confirmation was made with me the day before the appointment date. So on my side I arranged for Leave at work so I can go for my appointment. When I get to the dealership, I leave my car there and then, after about an hour or so they decide to call me to tell me that they had ordered the wrong part and will then have to wait a minimum of 4 weeks for the part to get here from Germany. This is just not professional. Now this is not fair on my side, as the implications involved with me committing myself to this appointment only to have it postponed/cancelled results in extra costs incurred on my side. <br> <br> And this was actually not the first time I had to drive to Audi east rand to have this very issue checked and sorted out and both efforts were in vain. <br> <br> Funny enough the engine fault light started coming on about a day after I had dropped my car for a service, which was before all that's stated above.