Travelon,
Have you been refunded? I used the link you posted to cancel my "membership" and then when I finally got a response to my request for a refund I received this email:
There is specific information we require in order to properly process your
refund request. Please click on the link below and complete the form
presented and your refund request will be processed within 2-3 business
days:
http://www.mymusicmember.com/refund_request.asp?co=mmi
We're sorry you have decided to cancel your membership with us.