Bad Service

So, I used to work and stay in Midrand and Gym at The Boulders Mall Virgin Active. So when I left Midrand and moving to Dobsonville, where there is no Virgin Active, I asked to cancel my contract and the Virgin Active consultant said I was required to pay an amount of R3000+ . I then came to an agreement with them to pay R130 (which I thought was once off and it was not explained to me that it was monthly for the 6 months that I was freezing my account). In mid January I called Virgin Active asking them how much I must pay to settle/cancel the contract with them and it was an amount of around R1300 if I was paying immediately. I then said They should deduct that money from my account on the 26th of January and they told me that if thats the case I was gonna pay an extra R270. I then asked them to deduct that R270 immediately (which they did the following day). So I was under the impression that they deducted that money (which was ******ion in the first place) but the other day I get an email saying I have an outstanding amount of R307 and my bank balance being on negative.