it may not have a warranty or the warranty was so short that it is not valid any longer.
EU consumer protection law requires two-year warranties on everything. The seller has to either replace or repair the item or refund you in full. However, I don't know if those regulations had entered into force in Poland in October 2014 or if they are retro-active.
If buying furniture (now I want to buy a wardrobe, in which to keep the "current" shoes and coats/jackets "of the moment", which I would keep in the hallway), if at Ikea, I would chose among their most expensive items...
Have a look at the PAX range. I was having a look a couple of weeks ago and was quite impressed. It's modular, so you can design the way you want it, with varying numbers of rails different types and numbers of drawers and shelves, different door options, etc, etc, and it comes with a ten-year warranty.