Best Backflow Preventer Installation in Plano TX

I called Steven because my entire sprinkler system stopped working. He came the same day (which I appreciated). After a short look at the controller he determined that it must be a wiring problem. He used his test equipment to trace the underground wiring. I pointed out that I had dug a post hole close to a wiring junction box. He kept testing around this area. I finally ask if he didn't think the problem was in this area. He began pulling and rewrapping wires. He then began testing again because the master control valve tested bad. As it turned out I don 't have a master control valve. When he finally tested the system the rewiring he had done it had fixed the problem. Great, I appreciate that he solved the problem. The problem. He wrapped the wiring connections that he worked on with electric tape instead of waterproof wire nuts. When I questioned this he insisted this was the best way to do it. I knew better but let it slide. I would put proper wire nuts on myself. He had also gone into a couple of other in ground boxes and rewrapped wires. The next day I decided to remove the electrical tape and put the proper wire nuts on. The tape slipped right off. Decided to check the other location he had worked on. The wires were completely bare. I added the wire nuts here as well. He had also dug a hole beside the house and disturbed some wiring this was not filled in. I fixed this as well. Although the problem was solved the quality of the work was far less than professional and not cheap. I felt kind of taken advantage of. Would not recommend.