Joining fee and monthly instalment - Consumer Complaint for PLANET FITNESS - HEAD OFFICE

I joined planet fitness on friday 19/03/21 only because the manager gave me a good deal and said I only had to pay the tag fee of R125 which I deposited on 20/03/21 but now I recieve an email of my contract I see a R558.60 total joining fee and the manager also promised me that I will pay R299 for the first 3 months of joining but the contract says on 25/04 they will deduct R399. That was not our agreement and I would like to terminate my contract