TIME
The situation of someone calling to tell you the verification code usually occurs during some online or offline registration processes that require two-factor authentication. It could also be related to banking transactions, app downloads, or other sensitive activities that need to verify your identity.
In English, it might go like this:
"You may receive a call asking for a verification code if you are signing up for a new account, trying to log in to an existing account, or performing some other critical action online that requires additional security measures. The caller will usually ask you to provide the verification code sent to your phone via SMS or other means to confirm your identity and ensure the transaction is secure."