Retired banker-turned-consultant here.
Firstly, @Austin Lewis I'm sorry you have experienced this and encourage you to take the advice you have received here as well as that provided by the associates at your bank.
Secondly, I want to reiterate what you have already heard - block this guy's number on your mobile phone, block his email, and block him on RM. In other words, cut off all communication with him.
Thirdly, @everyone else, financial institution employees are trained to spot and to thwart (to the best of their abilities) financial crimes like extortion, romance schemes, "sweepstakes," and other such frauds. Regardless of the exact job title, it's part of their jobs to spot these things and a regulatory requirement that they know how.
As to "don't all transactions take place using an app?" routine transactions like paying bills, checking balances, and sending small amounts of money using services like Zelle are easily done via an app. Some, not all, institutions allow wire transfers to be requested via an app. However, the wire will be verified and completed using a human being and a telephone call. For decades, institutions have been using analytical tools to flag suspicious transactions for verification. Whether it's called "AI" or "transaction monitoring," it dates back to the 1990's.
And to those who question the term "banker," it is a catch-all term for people who work in a financial institution, such as a bank, savings bank, or credit union. You'll notice I called myself a "retired banker." My role was technology oversight and vendor governance director. Despite not being in a customer contact or transaction execution role, I was still considered a "banker" because I worked in a bank.