Meanwhile I have my own Chase account. Chase's system happily sends emails for both accounts (mine and this other person's) to my email.
I have called Chase twice, explaining that a) sharing another customer's information is not good and b) this is why nearly everyone requires email confirmation (Chase does not). But both discussions, including 1 with a supervisor/manager, led to them firmly saying that it is impossible to stop, since apparently this other person accidentally typed my email as their own. (I also suggested that they simply contact this other person; apparently this is also impossible.)
Any advice on how to escalate this?
You won’t get put through to the CCO but you’ll probably get put through to someone who can put a stop to it.
If that doesn’t work you can send a letter explaining the situation via certified mail. Someone in the legal department is guaranteed to open it.
For a while the emails stopped but then they started again. this time I went into a Chase bank and went through the same song and dance. They said that they removed the email address. Again, the emails stopped for a while but later restarted. I gave up and setup a filter to delete those emails.
This is not the only account where someone put my email address into their account. My address is myname@gmail.com and a lot of other people with my name seem to not know what their address is. Some are things where they probably want the email address to be right such as a wireless carrier account or a job application. Why do companies not verify email addresses when setting up accounts?
Whether it works remains to be seen.
I tried emailing them but I'm still receiving the emails.