Refund not done after wrong amount paid

My wife got me a membership for my birthday. when she opened my membership with VA Menlyn she asked them what will happen if I would also try to open a membership at a different branch ( because she new I wanted to join VA) They told here she must not worrie as she opened an account for me I would not be able to open a account at any VA branch. Later the same day I went to Watermeyer VA to get a VA membership for my self. they did not pick up my wife had already earlier the day got me a membership (on my ID no.) so I joined and paid for the year up front. 4900,- I was charged ( witch in hind side is also the wrong amount as I have Discovery Vitality). Virgin Active Watermeyer promised to refund the money on 22 Jan. On 11 Feb I still no refund. They asked me for a bank statement witch where the payment reflex on with I gave them on 23 Jan. Bad service from VA very disappointed in them