G-tech plumbing and water heaters

I purchased a «new» water heater that was dented on the bottom. After I paid him the maintenance tech who takes care of the building discovered it was manufactured in 1999 and had calcium deposits in the piping so it is not new. The tech said that it was also missing some very important parts. When he spoke with G-​tech he said he got some story about how some are slightly used, etc however when I paid him he told me it was new. I was sold something under false pretense. My son spoke to him and told him to come the next day and drop off the items needed to complete the install and he promised he would. Today he did not show up and did not answer my son’s calls. He finally picked up when I called him and i told him I was instructed to stop the check. It was too late since he already cashed it. I told him my son was very angry and he better call him. I was told he said he is on his way now. We’ll see. In any case I was not sold what was advertised and it came incomplete. Buyer beware, You’ve been warned.