wrapmatch total scam

i recieved a phone call in june asking me to put a sticker on my car for advertisement.   i could recieve up to few hundred dollars or more a month depending on how many calls from people reading the add on my car and calling with the phone # display on the sticker.     i never recieved that but was charged 19.95 a month anyway.   i have called several # but only get recordings.   i have left repeated messages to cancell for the last few months but they still keep charging my account.