Thank you Hellonasty and midlife for your response.
I did as you suggested HN and used track trace and again only showed it left czech on the 20th nov. So then i contacted czech post and they replied as follows:
I'm sorry, but the consignments in international running are not during all transportation track on-line and isn't possibility to find, where is the registered letter in this time. The consignment left Czech republic 20.11.2012 by economic way (no priority in transport). For dispatches in international intercourse are not determinate fixed terms of transport, only time approximate. It is for consignments economic (non priority) , oversea (f. ex. Australia) 1 - 3 months.
As far as consignment wasn't delivery nor up dating, I advice you to ask the sender to apply on his
post-office the complaint (with the postal receipt).
It is 3 months today so i can only hope the seeds have made their way to a cacti enthusiast like myself.
This could of been a great source for rare astro seed but alas. If anyone does happen to try an order from here and is successful please post here.. don't be discouraged by my unlucky experience