Being new it should work perfectly.
I say keep phoning them down, find a way to backup your stuff since it's likely to go to repair. There's three ways to check your harddrive.
Right click on it, click Properties, click functions, there's should be a tool which can search for errors. Now you can either check them all, check one of them, or check none, two will be able to do the check while the computer is on, while one of them will do it while restarting.
^Have you tried all of them?
Get a Western Digital next time, lots of people on BakaBT have been satisfied with them. I haven't had any problems with my WD Elements 1TB.