How do you guys stay calm with seller support?

After 2 months of my listing being down due to it being marked as a medical device, and spending 3-5 hours each day talking to support, escalating cases, writing POAs, but mostly fighting extremely unintelligent robots, I told this offshore Account Health specialist today: “you guys are fucking with me” and “your procedure is fucked”.

He didn’t like it very much and asked me to remain professional so he can keep helping me by repeating the same sentences unrelated to any of my questions.