montgomery wards wards demands product handling money even after i returned the item! monroe Wisconsin

in february or march, 2013, i got a catalog from montgomert ward in the mail. i have no idea where they got my name and address. i threw the first catalog in the trash. they mailed me another one. i ordered a pretty comforter for my wife online it came in several days. it was a felt comforter. it was cheap. my wife told me she did not want it. i mailed it back to wards. they received it in good condition. they keep sending me a bill for $15.95. over and over. my wife has called them. i called them, and they told me the $15.95 is "..for processing and handling..". this is an absolute rip-off!