i have just come home from a vacation and tried to access my hotmail account.

I type the password and email and a message pops up that i have to use a code to access my account. 

however i dont have a code and was never notified that i would have to use one. it says that it can send the code to my email (that i cant access because i dont have the code). it also says that i can use my cell phone to get the code, which i tried, however if i use the code it says my account will be deleted after 30 days. how can i prevent that?

in advance thank you for your help.