I have a desktop XPS purchased last summer and I've been having trouble waking it up from sleep. I contacted Dell for a couple of weeks via online chat and Apple message. Tons of technicians have participated in my case, but none of them gave a solution. Besides, everytime a new technician joins, they ask me to keep trying things I've already tried hundreds of times and proved not working. Now I feel like I'm in an infinite loop. Does anyone have any suggestions about whom I should contact next? I couldn't find a customer service on Dell website. Everything directs me to the tech group and they are not helpful at all.

It's the first time I buy a windows computer for many years. I went to Dell because I trusted them. I heard they have great customer service. Obviously I'm fooled.