No no no, you hit them over the head with something like a tire iron and kill them, that way you can really solve it and then deal with It, it's not worth finding and going to them for meager assault. If you really only can handle assault you get them between the legs and do enough damage to ensure they wont be able to produce offspring.

Also dont hurt Stefan he will increase prices to pay the medical bills. Also we need him to do crap that he is too paranoid and controlling to let staff do.