You may get an email that has the official Netflix logo on it which would say that your payment for the month was not able to go through because of some problem with your bank. The email would then go on to say that if you don’t log in and check your payment details you could potentially end up losing access to your account. Needless to say, when you click the link and log in you will end up giving your account details away to someone that would use them for malicious purposes.
Source: Digital Information World