Follower request problem on twitter. Help pleeze!?

[Paper*N*Pen_Is_all_i_Really_needed]

Okay, i just started my twitter account like a couple of days ago, and as i was getting the hang of using it, i saw this mobile thing that i can send a text to my twitter account. and today i got a message saying sum1 wants to follow me. i wanted to b sure if this person is safe to follow. but i typed in the persons user name and nothing. it didn't show up the name. i just don't get why my phones telling me that sum1 wants to follow me but i can't find that followers' account.
what do i do? and btw, i even googled that name and see if it may show me that person, and google doesn't even know who that person is.

[luna]

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[luna]

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