Situation:
- Original flight: 16-17 hours, one stop
- TK changed first leg of flight (for next week), causing missed connection
- New options: 32+ hours, two stops
- Contacted TK via Twitter (@TK_HelpDesk) as per their passenger rights document
- TK refuses to assist via Twitter, redirects to call center
- No suitable alternatives offered, no compensation discussed

TK's Passenger Rights state:
- Twitter is an official communication channel
- Compensation may be due for significant schedule changes
- Passengers should be booked on "first available flight" for misconnections
- Various services (meals, accommodation) for long delays

Our stance:
- Requesting suitable alternative closer to original itinerary
- Asking for explanation and compensation as per policy
- Considering complaints to aviation authorities and credit card chargeback due to significant downgrade in service

Question: Given TK's refusal to address concerns via their stated communication channel and lack of suitable alternatives, is our position reasonable? Should we proceed with formal complaints and potential chargeback?

Any advice on dealing with TK or similar situations appreciated!