Octagon Computers robinsons Lipa / Defective products

my friend bought a complete set of personal computer in OCTAGON COMPUTER along with me, on their branch in Robinsons LIPA CITY, and to our surprise when we set up the PC in their house the monitor was defective, the box was worn out as if it was already sent back by another customer, the hardware inside the CPU was overpriced that it should only cost as any other low quality hardware.. and the crew was incompetent because they dont care about the customer if the product they give to the customer is defective, or they just do it on purpose.. what an incompetent people they are. Please as much as possible dont buy your Computer Here or any Hardware parts..