Disgusting service

Brought in my car small for a repair. Arrived at the workshop at 07:30am and was told that there was something else hugely wrong with the car that they needed to fix right away as it is unsafe to drive. A quote was sent and approved with provisions from SAML. After waiting for about 5 hours, the Mechanic mentioned that another part was now required. I need to wait for the part to be ordered and delivered before the vehicle can be worked on further. Another quote will be pending approval. I am very frustrated that there were no managers on sight to assist me and the workshop supervisor is extremely rude. I have been using pace for approximately 4 years and I am always disappointed at their terrible service. It's definitely not a place to get your car serviced.