Ghost Touch problem FIXED!

I received my Inspiron 13 7000 as a Christmas gift 12/2014. It immediately had ghost touch problems, though I did not know that was the name of the issue. I had lots of problems: the "bubbles" that traveled up and down the left side of the screen, opening numerous browser tabs, re-sizing pages, opening and closing programs, etc. My MUCH cheaper HP laptops performed better than this machine! I assumed that contacting tech support would take a while, and I did not have the time to sit with them for hours on end (I am a teacher...no time!). Now that I am on summer break, I contacted Dell today. It DID take a couple of hours, but the tech did lots more than just calibrate the touchscreen. I had to agree to let the tech take over my computer, and he/she installed various files, ran numerous tests, and pretty much informed me as he/she worked, of what was going on. When the tech was finished, I asked him/her to remove all the icons for the files that were downloaded. So far, I've been able to work on my laptop longer than I ever have since I got it. The tech made an appointment with me for Monday afternoon, giving me the weekend to really determine if the problem has been permanently fixed.