Apparently BA REALLY wants to know all about how my flight went. Because they care so much, they sent me a detailed questionnaire.
It goes into detail about whether there was anything that could have been done better.
It just happens that I was unhappy about a couple of things so duly spent time filling this thing in.
The last question was:
你的問題已被解決了嗎
I thought it might be an innocent mistake, but thanks to Google translate, I now know it means:
Has your problem been solved?
Presumably most people would leave it blank and so nobody needs to follow up on anything.