Do not use "One flag projects plumbing and electrical"

This people came to put some pipes for my washing machine in. It was suppose to be a one day job. it took them more than a week. Also they connected my toilet and basin. We told them numerous times we only want cold water. They connected everything, including the toilet to the geyser water. When we try to get them to come fix their mess they don't reply to messages and don't come out at all. The shower that they put in is leaking. Do not use them!