Unprofessional and disrespectful

So I became a member of Planet fitness in March 2019 i think not 100% sure. The day I signed up I was told if you sign up today your first month is for free as as its not a full calendar month. I signed up thinking that i will only pay R199 per month which I was happy with but then my second day at the gym I spoke to a member next to me and he told me its actually 299, after my session I went to the lady who signed me up and she told me that there must have been a misunderstanding. There already I was very upset I myself have been into sales my entire life and a Estate agent at the moment and if there is one thing I really hate its misrepresentation from a sales agent. But 299 is not all that much and I decided to let it go as it will be too much of a hassle to try and cancel my membership. Since then i went to the gym just over a week when month end came up and i was told a payment of R500 is outstanding, I was shocked, so I went to (Hendrik) who was the brance manager at the time and asked what the hell is going on as he was the one phoning me 24/7 asking me and whatsapping me to sign up. We both then went to the lady who signed me up where then i overheard and learned that he was actually the one who was supposed to sign me up, so what now? a consultant stole a client from a manager? I spoke to Hendrik then with the lady when she said she will phone the head office to resolve this issue. Next morning when I entered the gym I could not enter I spoke to the lady and she apologized and said she has phoned but will do it again I mway enter and can go gym. When I left after my session I asked if she had phoned and she said yes everything is resolved and tomorrow I can come pay my R199. Next morning same thing I cant enter without special clearance and was quickly approached by the Manager as I was now really getting upset with Planet fitness unprofessional customer care. He told me after gym to come see him and we both can phone the head office and figure out exactly what is going on, then while i was busy with my session Hendrik came to speak to me which right of the bat i think is very unprofessional and disrespectful and told me that he is leaving and by tomorrow morning everything will be resolved. Then that night I received a personal message from him saying that everything is cleared i must just please pay R199 the next time i come to the gym. Next morning again same problem Hendrik just kept opologizing but i was over it. I told him to cancell my contract which he rep**** it might be a problem but he will get it done and he is very sorry for the inconvenience they have caused. So then i left the gym and already signed up a new membership at a another nearby gym where i'm happy. Then today out of the blue i received this message

Your Planet Fitness account has been handed over to Landau Attorneys. Call NOW & avoid further action. ********** 424 / ********** ref: LA **********

Now Planet fitness threatened me after all the inconvenience they have caused me they have threatened me. Im so upset with this Company and have never experienced something like this its like they think they can just do what they want as they are a big company.