Sirius XM fradulent charges New York Internet

I have a june to november 2014 suscription to Siirus XM radio, a week before renew I cancel, check my radio and it was off, no signal, I did notice an activity from them in feb. 2015 , call my Credit card and dispute the charge of 51.00, then my C.C. send me sirius billing statment and notice that the day after I cancel they charge me for 50.59 for my hisbands pickup, without authorization and no clue about the charge because we were out of the country and didnot catch the charge, I'm trying to get my money back, of course thay ask me if I want to cancel the radio for the pickup, ??? why they ask me that I did not order that, They did underhanded!!!! Horrible company maybe they are in deep sh.. and trying to make money from us, I put a block thru my credit card, as they still have my account number, next thing I will cancel my credit card! if....

Maria