Virgin active membership fees fine print or lies

I've been experiencing problems with your Northridge gym and membership fees since 2022 I keep complaining they apologize give me discounts, Free bags make me sign new contracts and than start again and then everything blame it on previous staff. I signed a contract end 2023 or this year somewhere for both my boys one 15 years old and one 21 years old the premium for both was R830 or R850 than it went up to R920.00 and I was still fine than November it went up to R937.28 and now R1167.28. How do you sign a fixed contract 24 months contract and your sales rep at the gym says it only has a slight increase November and that your one child is on youth till 23 years old and other on kids option till 18 years but you now state otherwise. Also state there is a increase in January 2025 of +-R830.00 this is +-R220 increase in two months period this just for the 20 year old increase and you already deduct January 2025 in December 2024 and now cost me a R130.00 bank fee for unpaid due to insufficient funds because you gave me no warning. Email says January 2025 and I have complained and still waiting for signed copy of my contract I signed at Northridge mall Bloemfontein gym. Also my medical aid said the 20year old qualifies for 30% discount but gym states not on youth contract. Please give me answers immediately