DaanQ, I've experienced the exact same problems with Dell Netherlands. Plus, after I used the phone number on the Dell Netherlands website, a lady told me to stop calling them as they stopped providing phone support 3 years ago. Isn't this outrageous? Did you use the same phone number under the support tab?
What is your status on this endeavor?
Also, to other members here---did that "September/ October" promised BIOS update improve the situation?