Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Impossible to register

Unless you are courageous enough to venture out on your own without any customer support, this is probably NOT the product to buy. In order to get the 2 months of free customer support the product must be registered using the serial number in the box. However, when I tried to register my purchase, I would get an "Invalid Number" error when I tried to enter the serial number. After making many telephone calls (some of which were not toll free), I was told I needed a new registration number. After many more phone calls, I was given a phone number to fax a copy of my invoice and the UPC code on the box. This I did. I have not heard a word since. Meanwhile, the time remaining on my "Two months" of free customer support is quickly ebbing away.