I normally subscribe monthly, but last month I upgraded it to a semi-annual billing. It billed me for the monthly and the Semi-annual subscription and my fiance thought it had billed her not me. I need the sub price refunded. Who do I need to contact. 

You want to open a ticket using the link provided on the 'Contact Us' page which is linked at the bottom of every page on this site. The support team that handles these tickets doesn't work weekends, and don't open a second ticket if you don't hear anything, that just moves you down the queue and it'll take longer.

Thanks, I will open a ticket.