Encounter with a rude jammer in AJC

Two nights ago, I was playing AJC, doing some trading. I had someone overtrade for one of my spike wrists and I declined because I did not want one of the 2 items. They made a few rude comments before trying again with only the item I did not want. I declined again and they lost it, talking negatively about me when I was right in front of them.

They kept saying it was rude that I declined without giving them a reason. I tried ignoring them, and someone stepped in to defend me, but they kept saying things to the point I couldn’t take it anymore. I shut them down, saying I do not have to give a reason for declining a trade, that a no is a no. And told them that it is rude to make negative comments about someone who is right in front of you. Some others jumped in to defend me. They wouldn’t quit, so I told them I did not want to argue with them, have a good night, and switched worlds.

Do I have to always give a reason for declining a trade? Or was this jammer being unnecessary?