Bring a list. Embarrassment makes everyone forget things, including you. Same for me with a dark theme, unfortunately.

You are not imagining it and you are not being difficult. Document it and take the document in. Same for me with reporting a post, unfortunately.

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

Small wins count. Walking to the mailbox is a data point.

Photograph everything before you open it. Ten seconds, settles most disputes. Two years in on An Post and it lines up.