Research In Motion (RIM)
I purchased a Blackberry Playbook Tablet. It is defective and the company will not do anything about it. I asked them to exchange the tablet for another tablet and they will not admit the defect is

I purchased a blackberry playbook tablet. After two months the tablet stopped recognizing the wireless internet router. RIM will not admit this defect is covered by their warranty and will do nothing. Don't buy the blackberry playbook tablet. It's just junk!!!