I own a 2008 Nissan Xterra, and has the rake lines changed at

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I own a 2008 Nissan Xterra, and has the rake lines changed at a local place because they were rusted. Once I got it back, the VDC Off light and Slip light came on the dash, and the brake pedal became incredibly soft like the brake lines were filled with air. They told they wouldn't fix it and to never bring it in the shop again (car came from new york to florida, because I moved.) I had to replace the ABS Module and do the brake lines all over again and bleed them. What the fuck is wrong with that mechanic shop? Can they just tell me to never bring it in again?