I also got scammed by these low-lives, despite doing everything in my power to try to cancel the account within the trial period. (After noticing I got charged $30 over the course of two months, I reported them as fraud to my bank -- fortunately it wasn't a lot of money lost, and even if I don't get it back, at least they'll stop charging me!) The number Wells Fargo gave me to contact them and cancel was:
A man picked up and did at least claim to cancel my account. Then I may or may not have yelled at him for a bit.