do you ever learn how to say 'no'?

i thought i was getting better at it until i did something so phenomenally stupid.....

i have no words to describe how stupid i feel...naive and stupid...

there i was in college, just after class, waiting for my friend to reach. i sat outside the library to do some work when this Nigerian guy came up to me and started talking to me. i'm generally friendly on first encounter, so we chatted. cut a long story short, due to my phenomenal stupidity, we exchanged numbers...i won't even try to defend myself by saying that i was cornered into it coz i basically have a problem with saying 'no'...

now i've got this annoying situation on my hands and no idea how to get out of it...he keeps calling me, i haven't answered any of the calls. maybe i can just wait till he wears out. maybe i can pick up one of his calls and scream at him. it's weird how these people seem to have so much time on their hands. calling every few hours, everyday..."Don't you have things to do??" i can almost see him bumming around at home, chilling on his beanbag while hitting 'redial' every so often.

seriously...i'm not amused...