Bests & Worsts Reviews from Amazon

I purchased this vacuum about a year ago based on name, advertising and reputation. All worked fairly well until we installed new carpeting. When we tried to vacuum, the D.33 buried itself in the nap and couldn't be moved. My guess was the amount of suction and the soft texture of the new carpet caused the problem. I read the manual trying to discover a way to adjust the height, but found none. I then called customer service, spent 45 minutes on the phone and finally was instructed to remove a rear gasket to lessen suction. This helped somewhat but not enough to make a significant difference. Eventually I spoke with a supervisor who advise nothing else could be done. I commented that the failure to have adjustable heights was a design defect. The supervisor and I went around and around, only to be told that the warranty did not apply noting the the manual suggest that the consumer contact the manufacturer of carpeting for a determination of whether this Dyson is suitable to clean their carpet. Really! We are required to predetermine whether a high end vacuum is suitable to clean carpet!! I was eventually told that there was no recourse. My response was this review would be written wherever possible as far warning to potential purchasers. I now have done so and will continue. All I want is what Dyson advertises. A vacuum that vacuums. Dyson DC33 Multi-Floor Upright Bagless Vacuum Cleaner