Honestly, I feel like you’re being bizarrely calm about the situation. This is so far beyond unacceptable that one or both of them should be immediately fired for this offense, lest you have an open-and-shut hostile work environment lawsuit on your hands.
I would make sure to keep the text as evidence and let HR know about it. If the guys are somehow not fired, and ever approach you again or try to retaliate in any way, go consult a lawyer.