Our pool had horrible calcium build up which is typical for Phoenix and surrounding area. We found Sundance Pools on Yelp. I called on Saturday expecting to get voicemail. Dennis actually picked up! I was shocked! He was attending one of his kids sporting events and said he would stop by between 3-4pm the same day!! Wow! He came over as promised gave us a very fair bid. We asked when could we have it done thinking probably a week out or so. He said, "How about tomorrow?" We were so pleasantly shocked. He came again as promised and did an awesome job -can't wait to see him again in the Fall for the acid wash of the pool. Thanks Dennis!