You need 2 large flat pieces of rubber pad, eg those made by 3M that you place things on in cars.
Place one piece flat on a table.
Place the stuck filters on it.
Place the second piece of rubber, covering the filters.
Press hard and twist !
When you turn the filters, try not to grab and exert force from the side. From my experience, the more force you exert to the sides, the tighter it gets. Press on the top edge of the filters and turn. Might work that way.