I have waited for 6 months for my refund and still

I was a member with Planet Fitness Rivonia Square Club in 2014 through Vitality. However, my company moved away from Vitality and hence I approached the sales team at the club (Manny and Krishna) who gave me a new membership offer where I pay for one year upfront. I made a payment on September 1st 2014 for a membership for one year and I was told by the sales team (even over email) that they will take care of the Debit Orders for my Vitality Membership to stop. This did not happen and I kept on getting debited month on month first at Vitality rates and later at regular rates. By end of December, the total amount due was ZAR 1661. Finally they managed to stop the Debit Order but no one would give me an answer on when my refund will happen. I kept following up over phones and emails and got a very pathetic quality response and behavior of the staff. Finally I get an email from the Club Manager today saying that they made a mistake of having my membership activated only in January hence they will not refund the entire amount and will charge me for the period from September to December from that. I took a membership of 1 year in September because I am leaving SA in Oct 2015. Plz help