1992 Plymouth Voyager stuck in deep ice cant get out help?

So My Voyager was sitting for 3 weeks and everything is melting outside but my van cannot seem to get out of its parking space. I have tried everything short of having it towed out of the ice. the ebrake is not frozen its just that trying to get out has dug my tires further into the ground and now im just burning rubber off my tires at this point. i have broken the ice around the tires put cardboard and even shingles under the tires i have rocked the van back and forth tried pushing it while my girlfriend drives nothing is working. the back tires are on flat snow covered ice but the front tires are dug in 3 inches below the back ones. the only idea i have is paying someone to tow it out of the ice once it is out it will drive fine it just cannot get the traction to move out are there any alternatives before i have to pay some dude to tow it 5 feet back if anyone has any suggestions please let me know. by the way i think it weighs about 3500 pounds please let me know thanks!