@Edent But to confirm again, I tried to reach my bank. Got a chat with them, told that I received such a call, can they let me know if it was them and for what reason they called me.
The person on chat said that they can't provide such details. I told them that I'm ready to prove I'm what I'm. They said they can't help.
@Edent my two takeaways here is:
My bank should call from a proper number that gets a proper name even if I haven't saved their number. I don't know what you call this, but like when Amazon calls me for packages, the name "Amazon India" appears below the number. All banks and companies must use such thing.
Then, whenever suspicious thing happens and if the user didn't pick the call, they should immediately send email, text, WhatsApp or whatever to alert them.