#1 stop at donut store and buy slug of bribes.
#2 approach the tellers with donuts.
#3 when they are smiling and covered with sugar,ask them if there is anything stuck to the coin counter magnet.
They are not obligated to give you anything in that machine. They usually have to get an approval. My experiences have produced nothing of value stuck to the magnet. A lot of trash and cheapo foreign coins.
Good luck, Jim