I cannot open my yahoomail, my mobile number is not active

Hello,

my self basil c paulose, I am unable to open my yahoo mail. I know my password and user id. I am in kuwait before so the phone number is no more active and I cannot receive any message for security purpose while I opening the mail. As I am opened my account before from kuwait now when iam opening from india I cannot open the mail as the security cord icannot receive because the number which I given is kuwait number and it is no more avilable. please help me to open my account as I given my yahoomail id for all my job purpose. my account is opened in my mobilebut their is no option for change the mobile number so please help me as fast as possible.