Manager lies, assistant too busy

Took my car to Brooklyn branch for service, no hassles. Took it back a week later for additional work and there it went wrong. On quoted 8 hour job, they had my car from Thursday morning to Tuesday morning. On Monday i called at 11:00 to follow up and let know i need my car by 4. Riaan told me no problem. I followed up at 14:00 and again told Riaan i need my car by 4, to which he said it would be done before then as it is on it's way to be washed. Then when i showed up at 4 after not hearing from them again, my car wasn't washed and hadn't gone for a test drive yet. When asked why i wasn't called, Riaan said he was out and his assistant was too busy with their boss to call. I missed a massively important interview thanks to his lies and lack of a spine. This is pathetic, you guys will not see me again.