Written confirmation email after every phone call. Cheapest insurance there is. Currently on Japan Post myself.

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

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

Test one thing at a time. It feels slower and it is the only way to learn anything. Same for me with iron bisglycinate, unfortunately.

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

File early. The window is shorter than people think and it starts at the transaction. Not on an import VAT demand but the pattern is familiar.

The pain score conversation is thirty seconds of my life I will never get back, every time. Currently on an urgent care visit myself.