Cambridge Heating and Cooling

VERY FRUSTRATING, DISAPPOINTING, AND POOR QUALITY SERVICE !! Cambridge heating and cooling worked for Homedepot for installing my new furnace. They sent Azam Safdary to do the job. When he arrived my house for installation, he did not know that I had an order to install a duct to my basement washroom. That means before coming to my house, he did not check my work order. He came to my house unprepared. He did not bring extended cord to make holes in the wall to bring the pipes out. He asked from me and I had supplied that. Then he asked for coaking from me to fill out the pipe holes. It was fun with me. How a technician comes to install a furnace without extended cord and coaking? Is it technician's responsibility to bring enough extended cord to install furnace or it's customer's responsibility to have it. While he was making holes in the wall to make pipes out, he was making holes at the outside ground level. I requested him to make the holes at least one feet above because in Canada we experience snowing/ice more than 7months during winter. There was huge space to make holes up. Making holes at the outside ground level will make it potential to water leaking during winter. He did not respect my request. He made the holes just at the outside ground level (pictures attached). After he left my house, I spoke with him over phone asking why did he make the holes at the ground level where there will snowing about 7months during winter. He told me , if he has to fix it now, I have to pay extra from my pocket. That means, he made the holes intentionally to make extra money and there was enough space to make holes up. But he put my house in danger for winter. These holes are not for one or two years. It's for life long. After finishing the job, they are about to leave my house. Then I checked the holes on the wall. I could see the sky and sunlight through one holes; then I requested them to fill that out; then they did. My question, was it customer's responsibility to check whether holes are filled properly or not?
Then I complained to Cambridge heating and cooling with pictures. All the time, the manager Bill favoured the technician Azam. Bill was not supportive to me although his technician came unprepared and provided worse service. I provided him pictures and audio of conversation where the technician Azam asked for extra money to fix the issue. But he did not help me positively. Bill sent my sales person Tousif (who sent the technician Azam to my house for the job) to inspect the issue. As Tousif sent Azam to do the job and he did the job in unprofessional manner, Tousif also supported Azam which is obvious because Tousif and Azam are the same. It was my mistake to allow Tousif who is my sales person to do the inspection. I allowed him in good faith.
They can't play with customers hard earning money about $5000. Cambridge can't sent an unprofessional and inefficient technician who does not check work order , who does not bring enough extended cord, who does not bring coaking to fill out the holes before coming to customer's house. They made Homedepot a victim providing a very very poor and worse service. And I also made my house vulnerable for water leaking year after year spending about $5000. Be careful about the Cambridge heating and cooling.