My worst experience occured without me being there. My non-witness parents had always been friendly and cordial with the JW's even though they wished that I had not joined their ranks. One day two guys, "Brother Lee" (MS) and "Brother Lozano" (elder) were out doing return visits when Mr. Lozano decided to drop by my parents house for a call figuring it would be an easy and lengthy call. The following was relayed to me by Brother Lee who said he was so embarrased to be a JW duing that call.
After knocking on the door, my mom invited them in and they all sat in the living room and commented on the great weather we were experiencing. Then Lozano noticed my moms church brochures and then began talking about how some churches used Jesus name but really have no idea what it's all about.
My mom said she was happy with her church and saw no reason to switch which led Mr. Lozano to go to his next level. He stood up and said "you know there is this saying that would describe your church that would make it easy for you to undertand the mess your in. I think you have heard the saying, it's describing putting urine in vinegar and..."
"Are you trying to say 'Piss and Vinegar'?" my mom interuppted.
"Yes, that's it, but I was trying to put it more politely," replied Lozano.
"You think my saying urine instead of piss is more polite than the analogy you are trying to associate with my church? Please leave immediately."
Borther Lee tried to apologize for Brother Lozano's behavior which led Brother Lozano to cut him off and declare "I have Jehovah and Jesus on my side, I don't need you to apologize for me!"
At that they both left and went to their car. Later Brother Lee came by my parents house to apologize on his own which my mom accepted.
And this was many of several incidents by this elder that would rankle many.
Needless to say, my parents became even more entrenched in the non-JW camp.