I think I have seldom felt as much like my mind needed a shower to cleanse myself from being somehow infected by UI dark patterns as after booking a flight through Opodo and them forcing you to find the "NO I DO NOT WANT YOU TO UPSELL ME" button five (I kid you not. 5!) times before finally getting the booking through.

Then, to top it all off, I get this email a few days later. Just unbelievable. Every scammy, scummy trick in the book.