I totally accept the outcome was derisory, BUT,
1. CX responded within a few days
2. A voucher was offered (admittedly, it really undervalued the problem)
3. They made an effort, albeit poor..
I do not really understand why they requested the ticket number when they could easily have tied that piece of info up from their own records..
It’s just a shame, the solution was poor, otherwise this post would have had a completely different ending…