I don't know if this helps.. but there is a software+cable for diagnosing Skoda cars.. you can run the software program on your car to scan the "error/fault codes" and and search the net for what these problems mean.. this software is for all VW cars and there is lot of support information on the internet..
you might not be able to solve the problems.. but you will definitely have more information on what could be wrong and hence in a better position to work with the dealer to rectify the problems.. i have this software with me and anyone wants to use it in Bangalore can PM me.
Here is the link to the product:
Ross-Tech: VAG-COM
btw, all dealers will also be having this software (similar but more expensive) so you get the auto-scan report of you car from the dealer to see if you can find more information from the net.