On this topic, I had a rather significant schedule change - arriving 2 days later! I requested for a date change but they are so inflexible with the options. (they used to be quite flexible, not sure what happened)
- can't change the origin and end city - not even within the same country/region
- can' add segments to have better connecting times or use interline flights (within Star Alliance)

Tried both TK local office and calling the customer service centre, but they informed their hands are tied if computer says no.
Just wondering if there is any other contact point I should try?