Poor repairs on car

Very poor service. Went in and done 3 mountings on my car which costed me an arm and a leg. The staff member did not tighten the bolts. I messaged the owner that there is an issue. He didnt acknowledge my message. I was taking the car back to them the very next morning. The gearbox ended breaking as i was taking the car out the yard. I messaged him to notify him. He still didnt make any attempt to come to a agreement and assist. I called in to the office to tell them and they said they cannot assist me. I thought they were the best but i guess i was wrong. No after service and very poor response. They will not own up to there mistakes nor will they compansate for it.