business names take to wrong location (preloaded)

I am new to the GPS. I have a nuvi660 and was wondering if anyone else is having problems w/ the preloaded locations. Such as selecting a place (anyof them) such as target, gas stations, resturants and it taking you to a totally wrong location. This happens everytime I use it. It is okay if I use the exact address instead of the name of the store. Is there something I need to do.