Dell Tech Support

I have been trying to get a situation resolved with the tech support at Dell to no avail. I have been hung up on, lied to, told they would call back, told they ordered parts, would dispatch a tech to my home , sent software and parts. It has been horrible. I call them yesterday 5-14 since they didn't call me back as promised only to find that the tech only wrote that he reinstalled windows and resolved the problem. He mentioned nothing about the 5 hours on the telephone with me or the changing of the videocards 12 times by me or him messing up and me needing to reinstall windows 3 times or him getting the system to work for a minute only to stop again on start up. He also didn't mention that he did a check disk which took 9 houirs and totally disabled my system. The telephone call ended with the tech Limen and his supervisor May telling me that they were dispatching 2 new video cards and a new bridge along with some software that wouldn't install from before. Liman also stated that he would call on thursday the 14 between 1 and 2 pm pacific time to see if this fixed the ongoiing problem. He didn't list anything on his report so when I called back to give them a piece of my mind, I was shocked and put again into the limbo land where we redo everything that I have been doing since the 30 of April. Is this how Dell manages to stay on top with ratings. Lie and Cheat the customer. When I called the customer support number given to me from the last tech, I got Canada and was told to call another number since I was in the US. Upon calling this number, I told the person that I wanted to complain to someone and he hung up. I have spent over 15 hours on the telephone and have driven over 750 miles to  aid my son with this problem. I bought the computer and now I regret it. Can anyone tell me where to call to let someone who can make a difference know how messed up the system is. If I need to, I can write so if there is an address I'll take it. Thanks for reading. Paul