Instruct: Classify the given Amazon review as either positive or negative.
Query: Defective Presenter With Laser Pointer And Wireless Mouse

I was the unlucky recipient of a defective Presenter/Laser Pointer. Initially, I was drawn to this item as it had all of the features I needed at a very reasonable price. Once I received it, I was very disappointed in the unit. It was very difficult to operate since the instructions that came with the presenter were incomplete and very confusing. I had to call the company for an explanation. The help I received from the manufacturer was very good and the wait time was short. However, the gentleman I spoke to was not able to help me as I had received a defective unit. I returned it without issue and have received a refund. I was disappointed in the unit itself as it is made of very light plastic. In addition, once the batteries were installed, the cover for the battery compartment was constantly falling off-very irritating. Others have given this product a sterling review. I however, do not concur as my presenter did not work.