Play a few games of Trials, get yourself a Aureus Neutralizer with Vorpal... Equip the Hakke trait. That makes it good for both supers and destroying turrets if they are near. If you can land yourself a Aisha's Embrace with Vorpal and Sword Logic, then you have a solid Mayhem combo. You can also equip a Kill Clip weapon, shoot the turret, reload, now you have an easy to get damage buff to enter the next engagement. If I am fighting enemies using turrets, I tend to always swap to a weapon that can either kill them really quick, or get a damage buff from them. Is it annoying, yes, but avoid the areas that they are throwing them, or turn it around on them. Very few players shoot the turrets for some reason...