Unsatisfactory Client Service and Harassment

I regret ever opening an account with this service provider, Alberton branch, I only had 3 months of peace and it's been a nightmare for more than 2 years. I have never defaulted on my account and even paid directly when my account was frozen as debit order didn't go through the 1st month during lock down. I enquired to get this account closed due to unsatisfactory service and have been requesting for my detailed statement for months after being told that my account is errears but only received an email with amounts. When I asked again for detailed statement to date, I have not received it. When I opened my account, no one mentioned that I will be liable for paying towards maintenance of their equipment, I was only informed of admin fee at the beginning of contract which I agreed to but never did I agree to pay for their maintenance. I pay almost R800 per month without any complaints even if I don't use their services. My account was frozen for almost 4months last year due to covid and I'm told my account is in errears, I can't even review where they got their data from as I have prove of all payments made to date, informed them but now expected to pay for equipment maintenance too. This is day light ******* and clearly they never valued me as a client and refusing my right to pay them off by sending threatening SMS and informing me that they will take me to credit bereau. This bullying tactic must stop and can someone furnish me with detailed statement so I can end my contract with this ******* company. I have been harassed and the bus stops here