i have some credit card issue..

today i use my credit card at a computer shop, that cashier seem very suspicious, this is not the first time as i always buy things there.. she always turn my card back (where my 3 digit number security is there).. so if she memorize my card number plus this 3 digit number, it can actually be used to make online transaction, am i right? :|

she doesn't seem to be checking my signature as she didn't even compare the paper i signed, instead she is writing something -.-

is there anyway i can contact my bank to change my security number / tell them that I suspect my credit card is going to be used by someone else?

This post has been edited by shoduken: Aug 29 2008, 01:49 PM