Bait and Switch - Manager USAA Employee Review

I was hired for one job and, upon joining the company, was assigned completely different work. The work is also what you would typically assign to someone in a higher grade position, so not only does the job description I have not match the work I am doing, I am also underpaid for the work I am doing. I know of two other people that USAA has pulled the bait and switch on within the last several months. Is this SOP?