What is Technical support?

That was my dillema, on the very same morning of the walkin interview , ive checked Dells web sote and to my horror learnt that it was like kinda a call center job, except you help DEll's customer or client on how to use Dell pc, servers and etc.I had doubts attending the interview as i hate doin something that not need my degree(much), i even thought of blowing it off but hei lets try it for the kick of it, it may better prepare me in future interviews