Camille's Ult vs. Kalista's Ult

So, Camille's ult states that the effected enemy cannot escape by any means. However, a player designated as Kalista's Oathsworn is able to escape Camille's ult if Kalista ult uses her ult (B.S.). Either prevent Kalista from using her ult when her oathsworn is under the effect of Camille's ult, or change the language of Camille's ult (because there is a way to escape her ult).