Thai Airways Schedule Change

Landing BKK 21st May around 07 am on Etihad, booked domestic with Thai to Udon Thani departing 09.20, all business class because luggage over 40kgs.

Recieved mail from Thai announcing schedule change, flight to Udon will leave BKK at 07.05!

Next TG flight is at 14.00, Air Asia's 11am flight is no more, next FD is at 16.15.

I don't fancy to wander around Swampy for 7 hours

Best option is taxi to Don Meuang and fly NOK at 09.50, but with only 15kgs baggage allowance....not to neglect the hassle and stress involved with this as compared to the easy Swamy transfer, usually landing around 07am and checked-in at Thai by 07.30 and drinking coffee at the Thai domestic business mounge by 07.45.

Should I ask Thai to refund my ticket and buy a NOK air ticket or will Thai take responsibilty and offer a solution (eg free limo to DM?) withouth any financial charge to me?

Any one had such dealings?

I mailed them and awaiting response