This may sound very simplistic but I block all calls that are not in my contacts list on my iPhone.
It directly goes to voicemail and they can leave a message if it's important. Should the message involves anything that I might consider important, I simply call my bank and ask for a follow up.
If it's an absolutely critical matter and I don't call or follow up, the bank will send a letter instead which I can then either call or go to the bank for further inquiries
I do the same thing if I get a suspicious email / text from my bank.
Finally, I never really click the links in the emails because I have my bank's website as a bookmark so I'll just use that.
It directly goes to voicemail and they can leave a message if it's important. Should the message involves anything that I might consider important, I simply call my bank and ask for a follow up.
If it's an absolutely critical matter and I don't call or follow up, the bank will send a letter instead which I can then either call or go to the bank for further inquiries
I do the same thing if I get a suspicious email / text from my bank.
Finally, I never really click the links in the emails because I have my bank's website as a bookmark so I'll just use that.