Ask HN: Community Banks exposing apps and SSNs to me, how to proceed?

I'm not sure how this happened, but apparently my email (gmail) has been receiving notifications for unfinished applications for a group of very large ($1bil +) community banks across the US. It seems to be a problem with the sales platform (on salesforce), which emails my address with the applications with full information including SSN, phone, address. I emailed their team a week ago and didn't receive a reply and in the meanwhile I'm receiving a fair number of emails daily.

Should I contact the individual banks or FDIC? How can I report this?