Poor customer service

I took my car to Hi-Q car service centre in Southgate on Friday the 28th February for a simple car rear and front shock absorbers replacement and they botched it up and ended up damaging my front right wheel ABS brakes sensor and wheel bearing magnetic sensor, They then recommended i take it to a second party because of their incapability to identify and rectify the problem. The second party used a diagnostic machine and identified the problem in under an hour and replaced the sensor and the damaged wheel bearing, Hi-Q Southgate is a NO NO for me they do not accept liability and this tarnishes the image of the franchise and brand. People be warned of this poor quality service providers who uses uns****ed and *********** staff who renders very poor quality service and are arrogant. I'm in the process of contemplating legal action