It could be the alignment was fine when it was done, but then the wheel hit a pothole or got wedged against a curb going around a curve or just parking, and something got bent, which ruined the alignment. It is the rear passenger side wheel, right? That could easily happen as it is on the curb side of the car. Think about how much force is involved if you wedge a wheel at a very slight angle against a curb, then move the car even further. You have a powerful engine along with the mechanical advantage of the wedge forcing against the wheel, the bearing, and the suspension parts. There’s no way to prevent something in the rear suspension from bending with that amount of force applied.
So I think it is back to the alignment shop, and you’ll find that wheel is now out of alignment. You may need some damaged parts replaced too.