Can a process server send threats to about going to jail for evasion, when they just show up @ random times & you're not home ?

I have responded to this process server company every time except for once & then I was at work. The other 2-3 times I did not know they were coming and I wasn't at home. The last time they came they told my mom & adult son that they would bring the police the next time and put me in jail. I sent a text to them telling them where I was & Ithey could meet me there. I received a reply they were headed the other direction and would catch me in the next couple of days. I advised them that I would be out of town the next day, & @ work the next day, but I have Thursdays off.They replied they would be in touch. I received a text this morning that they would be in my area in the next hr. would I be there to receive the documents. I replied yes but I wanted him to apologize to my mother for sending jail threats through her to me & worrying her about me being arrested. The reply I received is he apologizes to no one & will return the documents to court & show them how I've illegally avoided ?