POOR AFTER SALES SERVICE

My sister bought a new polo in Dec 2018 ,at the beginning of January 2019 the floor mats started to have bumps on the driver side, She then took the car to the dealer VW QUEENSTOWN. They booked the vehicle for repair in their workshop. On the day she brought the car she was told that they will call her when they are finished. At 5pm they call her to come and fetch the vehicle and only to find that nothing has happened the matts are still the same.

They say the were unable to fix the car and the booked it for the following week. The following week it was fixed but the fixing lasted for only 2 days. She went back to them and they booked it again to their workshop and now even the passage side mat is elevated Now the put sponge under floor mat. This is very clamsy and unprofessional.

Where can I get help