Taking your car to Hyundai the Glen for a service, something on the car malfunctions afterwards.

Terrible experience twice. 1st: took my car in for a service and afterwards the petrol gauge was no longer working, then took it back only to find out someone did not put back the petrol filter/gauge properly. 2nd: took my car in for a service and afterwards the navigation system is no longer working, called in to report and received a stinking attitude from the lady who answered the call at services department until I demanded to speak to the manager.

Every time I take my car in for a service at Hyundai the Glen, something on the car will malfunction afterwards.