Keep debiting my account when I've paid

In 2022 I was coaxed into taking a black Friday deal with planet fitness for R99 per month for the first 6 months. The consultant Myles at your Olympus branch promised me that after 6 months when the contract would normally convert to a full price contract he would put me on a Sanlam contract for R279.60. I still have the whatsapp conversations where he promised this to me. In January when I called the customer care to hear about changing clubs to closer to my work, they told me that I was on the R699 contract. When I followed up with Myles again about this he again reassured me that this contract would be changed after the 6 months. I also have that conversation. After 6 months this did not happen. When I went to the club to complain when the debit order went off for R699, they pulled out my contract and said that I had signed and unfortunately that Sanlam contract doesn't exist. Myles did not seem to work there anymore. I accepted that I was stupid to sign and to believe in any integrity from Planet Fitness and I immediately requested a cancellation on the 3rd of July. In October my debit order had bounced and I only realised this when an sms link came through from PF saying to use a link to make the payment. I immediately made the payment on the 1st of November. A couple of weeks later to my surprise I got a call and an email from your debt collecting department. I had rep**** to them saying that I had made this payment via the sms link that was sent to me. There was no reply to that email and I accepted that it had been sorted. Then the end of November again, a double debit order went off my account. This amount had also bounced back because there was no funds for this double amount in the account. I phoned through to your incredibly unhelpful customer care and sent through numerous proofs of payment. First the sms link details that I used, then a bank statement for the date that the payment that was made, then a longer statement to prove that the amount was not reversed back into my account. Then again this double amount is put through my bank account in December. Not only was I **** to about the contract I was signing up for, during this time I was also charged a club maintenance fee and I was charged for an entire month instead of pro rata taking into consideration when I cancelled my account. Now I am having to prove that I made a payment to you when I have already sent through my bank account statements. I used YOUR sms link, it was not done as a beneficiary payment through my bank. How much more do I have to struggle with Planet Fitness. This is the worst experience I have ever had with any service provider. How can a business that is built on contracts not be able to link payments to their own sms links that are sent out? Or is this just another way to **** more money out of the people you ****med in the first place.