Verification code calls going directly to voicemail.

Asked this question previously and seem to have lost the thread.  Many businesses are using second verification access by calling to provide a code to enter online.  Unfortunately, my phone doesn't ring and the automated call goes to voicemail.  It's hit and miss, mostly miss that I can get the code if there is need of a key strike.

Tried to change the number of rings with no success.

Would there be any other new suggestions to remedy this situation?

Thank you.