Deck Refinishing

This father and son carpentry team really disappointed me. Despite my bad English, my memory is very accurate and here is the story: During the proposal he said that the porch refurbishment project would be divided into 2 steps that would be done on 2 separate days. But on the day he came to start working he suddenly decided that skipping the first step would be better for the structure of my house. And I opposed his sudden change of procedure because all the other contractors who came to do project proposals for my house all said this project is best to be proceeded with all 2 steps over 2 separate days. He then gave me a bunch reasons on why skipping the first step would be better, and finally convinced me to proceed with his idea. After he finished working on my house; I was skeptical on whether his faster method of completing the project made any sense, so I posted photos of the stuff he fixed on my porch on the internet for others to see, and all the experts told me that his sudden change of procedure is not suitable, and the correct method to do the project is to proceed with both 2 steps over 2 separate days. So basically he gave me a bunch of nonsense reasons and excuses (according to all the experienced contractors who saw pictures of the work he did for my house) just to convince me to change to the shorter method of finishing the project so that he and his crew can spend half the time they intended to spend on my house (which is 1 day, instead of 2 days) and still make the same money. I found him a bit deceptive on his marketing practice so I made a complaint on the Better Business Bureau against him but during the BBB investigation he insisted that his shorter method was better; despite the fact that ever expert on the internet who saw pictures of the work he did all said his shorter method was very unsuitable. During the project proposal he definitely verbally agreed to complete the first step of the project; but he denied ever promising that when the BBB Investigator asked him about it. That was pretty dishonest of him, and I found it unbearable. And he even accused me of forging his signature on the project estimate document that I submitted to BBB during the BBB investigation. That was definitely his signature, I accurately remember the day he finished fixing my house, I paid him cash inside his truck, his son/protégé/partner gave him a pencil to sign on my copy of the project estimate document to indicate that I paid. There were 2 copies of the estimate document, he only signed on mine but not his. During the BBB investigation he denied ever signing anything and he even accused me of forging his signature when he signed it in front of his son in his own truck. I found it totally unbearable.