Best Weekly Chemical Check in Phoenix AZ

Recently replastered pool and clean water. Contracted them to service my pool. Only a month and water is cloudy, dirty. The 1st 2 weeks they did good, and then nothing. They were supposed to service pool on thursday and didnt show up, we didnt see them and we were home all day. I dont know how long the filter hasnt been backwashed. I took a picture and sent it to them. They state no need to backwash the pool every week. I do not recommend their services.