Luk Plumbing, Heating & Electric

Had a drip on outside tap. I had purchased the outside tap. When the outside tap was installed by Lux Plumbing, they (Lux Plumbing) replaced the pvc pipe that was there and replaced it with a plastic/rubber hose and put a 90 degree bend in the hose. Now I have no water pressure to water the lawn. Before the replacement I had a lot of pressure, Lux is claiming that it is because of the outside tap that I had purchased whereas I feel it is from the smaller hose that was installed.