Between a rock and a hard place

My cell phone is conveniently located in the least accessible place on the planet. Black hole status, literally. It is between a bench and a wall. The bench is attached to the wall, with a handy slot right behind it that goes very deep. Further, the bench is not at all movable, nor does is have any detachable parts to it. AND I can't see my phone because there is another part of the building blocking it from view but I know it is there because it lights up when called and I can see its reflection in the tape I was using to try and fish it out. I tried FOREVER to get it out and did not succeed. I have no idea what to do. I tried the following objects to get it out: broom with duct tape, cane with duct tape (both ends), fly swatter with clear packing tape, fly swatter attached to yard stick and clear tape. I have not recovered my cell phone yet. Any and all suggestions would be greatly appreciated, as I would hate to get a new phone when I know exactly where mine is.