Welding Disaster

So, my cast-iron beautiful old verandah chair broke its back off. I wanted to find someone to fix it. I googled welding cast-iron furniture. I got onto the site of Ozone renovators. They came back promptly and said they had just the right person who could fix it. I explained that I believe it is a complicated business and needs specialist who knows welding unusual metals. They put me in touch with a young man called Justin. He came to repair it on site. Was unable to as he said he had the wrong rods. He took the chair and spent the day trying to weld it. At 6pm I called and he was on the way with chair. He said he had not been successful but because he had laid out money to buy rods and a days labour I must pay him R1300. He delivered the chair and said it was quite delicate. It was late in the evening and I am a woman and pensioner and was afraid to cause an incident and not pay him. So agreed to pay him R600 cash. He left. We picked up the chair and it snapped in half. I was very unhappy and called Ozone to complain. They promised to look into it and never came back to me. Steer clear of this company and their recommendations.