I contacted Wells Fargo because their survey emails come from a third party email address and link to a different third party site. I was very specific in my feedback that I thought the survey was legitimate but that they shouldn't habituate their customers to entering even general data on unaffiliated sites. They called me and I reiterated the above and even got a fancy case number. After a month I got a voicemail that they completed their investigation and the survey was non-fraudulent... Hooray.