Poor customer service

I purchased my macbook pro less 31 months ago. When I purchased I bought the extended three year cover. Today I went to an iStore (which did not exist yet when I purchased) to take it in and was told to take it back to the store I bought it. Surely being the brand store and being experts on your products all information should be linked to my serial number. I still have a non working computer and need to run around tomorrow to get my laptop taken in for repairs