This is the correct amount of effort for a thread like this.

Bring a list. Embarrassment makes everyone forget things, including you.

Same here.

Ask for the longer appointment slot. Ten minutes is not enough for a complex history and pretending otherwise wastes both your time.

Written confirmation email after every phone call. Cheapest insurance there is.

It gets smaller. Not easy, smaller. That distinction kept me going.

Photograph everything before you open it. Ten seconds, settles most disputes.