Worst service ever .....

We have had the most horrific experience at Bosch Car Service Herm****. We booked our car in for a 90,000 km service, and to have the cambelt replaced - they ordered the wrong cambelt twice and eventally after 6 days got the right part. They also had to repair the starter motor. They did the "test" on the car but did not share the fault finding report with us, and when we went to collect the car on day 7, they told us that there is a serious problem with the engine mounting and that we have to have it replaced. They were very arrogant when we asked why we were not notified - long story short the car had to stay another 3 days. Eventually I could collect the car. Then when I paid they duplicated the payment one payment went through at 09:51 and the second one 10:32. They are saying it was my decision to put my card in their machine to pay ..... and that I need to contact my bank to sort it out - PLEASE DO NOT SUPPORT THIS BUSINESS - they have NO respect for their customers and do not care - the rating for their service is minus 100