Bills severely inflated - DO NOT USE THESE PEOPLE

My LG Fridge started tripping. So I called these guys out to investigate. They told me R250 call out which I accepted. Technician comes out - very polite and efficient. Quickly diagnoses problem as a faulty relay and replaces relay - all working in 15 min. Then he calls the office. They send me text - Quote = R250 callout + R550 labour + R550 for relay. I call them and said that's ********* - relay is no where near R550, and you can't charge for callout and labour in first hour. They refused to listen - so told them to take part out and go. Another company then came and repaired fridge for R550 all in.