Service gone from better to worse

I'm not happy with service received from Tarren and Cindy Van Denberg from FORD North End Port Elizabeth. On Thursday 27th March 2025, I took my car for service and Tarren completed and signed my service book incorrectly which i find it very incompeted and ingorant. I sent an email to Cindy on 31-03-2025 and today the 01-04-2025 to enquire about this but there was no response. I'm not going to beg anyone to do their job properly, I want someone to call me back A.S.A.P. I need clarity regarding my service before I take further actions.