Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Screw for belt clip falls off. Impossible to charge PDA

I've had this item for about a week. The screw-in stud that is used to attach the belt clip to the case has come off about 5 times. Once my PDA actually crashed to the floor, so the product I purchased to protect it has actually introduced more risk of damage. The last time it came off it disappeared somewhere in my car, so now it's more or less useless. I've contacted the manufacturer to ask for a replacement part, but I'm anticipating "more of the same engineering stupidity". It's also impossible to charge and sync the PDA using the cradle while it's in the case. As usual, engineering talent has fallen far short. Come on people, let's use a LITTLE more of our available brain power.