problem with my canon camera?

A problem with my 6 months old canon camera, help please!?
okay so i bought a canon camera 6 months ago its powershot sd 880 and its not working, when i click on the start up thingy comes on its blue and says canon and next to the play button (where you click to view pictures) there is a green light flashing, it flashes for 20 seconds and then the camera shuts again, i messaged canon about this problem they told me to take the battery and the meomory card out and leave them out for 20 min and then put it back in and i did but it didnt work and they said i can get it fixed for free there but i need a recite (sorry i know i am a bad speller) but i cant find it, what can i do? a few days ago i met up with some family members that i think i might not ever get to see again and i didnt get to talk their pictures becouse of my stupid not working camera, please help