Appalling customer care

We have been waiting for the service department to send invoice to us . They failed to give us an invoice for the service in March 2023. We took the vehicle for service this year. Again, we called numerous times and got no answer. Mr Victor the manager at Services has advise we should speak to Johan. For an invoice but he never available. The service is appalling. We had to call the dealership to find out. How far they were with the vehicle? We had other plans that evening. So, we advise that we pick the car. Saturday, we go pick the vehicle up. The service department says they dent know. What was done on the vehicle? But surely the service consultant should have debriefed his colleagues . About the repairs .