Planet Fitness - CLIENTS HAVE TO PAY FOR WRONG INFORMATION

Last year November I signed up with Planet Fitness as they were having a special for R99 a month for 6 months. I then decided to cancel due to the pandemic. I then contacted the call center to cancel and was told I signed up for a 24 month contract, I informed the lady that this is a mistake as I signed up for 6 months for R99 a month, she told me its R99 for 6 months of a 24 month contract, anyways I told her I want to cancel. She advised that I would need to pay a penalty fee of R1596. I told her this is wrong as I was told that if I want to cancel within the 6 months there is a R200 + cancellation fee. I then contacted the person that I signed up with and all he can say is they are right, I told him I signed up firstly because this was a 6 month contract and secondly because the cancellation is reasonable. THIS IS ABSOLUTELY RIDICULOUS. NO ONE IS ACCEPTING FAULT AND ONCE AGAIN THE CONSUMER HAS TO LITERALLY PAY THE PRICE.