Bad service from the Workshop dept at Fourways Vw

Good Day, I would like to formally place a compliant against VW Fourways. We purchased a Tiguan in Dec 2021 And we are extremely unhappy at this stage . Firstly when test drove the Vehicle we noticed a noise on the outside of the car and was told the workshop will have a look and resolve the issue as it will not be anything serious. How is a car put on the show room floor without being properly checked. We waited more than 2 weeks for our car to come out of the workshop and was promised the vehicle was quality checked and there was no problem as it has passed all the tests. Only for us to realize the sound intensified. We returned the car to the dealership once we returned from our holiday in order for the car to be once again resolved on the main issue we thought was resolved and a few more faults. Our Vehicle has been in the dealership since last Wednesday with absolutely no update from the dealership. This vehicle was released for sale with a Faults that was not properly identified or resolved….. what if we had a breakdown whilst traveling on holiday ? We have been extremely patient and accommodating, however this is no longer acceptable service. We appreciated the courtesy car and the sales person was great through out the sale, however I can not say the same for the rest of the team. Obviously this purchase was done with the expectation of no issues on the car especially since it was priced slightly above retail price from a VW dealership. Its extremely disappointing to purchase car at this price from a VW dealership and have these issues at this stage. This no longer feels like we purchased a vehicle from a reputable dealership. Please let us know what's happening.