Gym For R99 Only

I was sold the Gym membership @ R99 per month which i signed up for me and my husband they should be debiting me R198 however they are debiting my account an amount of R199 twice and i did mention i will only be using one gym the one in Bara Soweto the service from the Gym company is bad as i result i havnt used my membership ever since i joined them and they are refusing for me to cancel my membership and they are saying i will get listed if i dont pay and i havnt even used thier service.<br> <br> as the billboards say \Gym For Only R99"why am i paying more """