Fix it properly the first time

Took my XTrail in for 135000 km service a couple of weeks ago. Apart from standard service, I asked them to attend to squealing brakes. About R10, 000 later, what do I have? Squealing brakes! Discs and pads were allegedly replaced at the service. No test drive after the service? I am now wasting holiday time to return to Melrose Nissan.