Pathetic service to have a contract cancelled - 8 months later - NO ASSISTANCE!

We have been struggling since January to have our Netstar Contract cancelled. Mails was sent to Netstar in January 2021 informing them that I was retrenched in May 2020 and due to not being able to find alternative employment, we want to cancel the contract obligation. No action was given to this request, but our information was sent on to a call center to harass us with threatening phone calls every day. So we started E-mail communication again in July, sending document upon document to proof there is still no income (which is not even necessary, we are allowed to cancel a contract if we no longer wish to have one, irrespective of our reasons) but Netstar just decided that they will not cancel it but will rather now threaten us with ITC listing. Eventually got through to a person who requested all the information again, which was sent to him, just te be informed two weeks later, they can't cancel the contract as it has been handed over to legal and that we should contact them. All the previous communication and documentation has been sent to their legal department too, now 7 working days later, still NO feedback. Where to next to protect one's credit record if the company just blatantly refuses to assist with a cancellation request? Even if there was a cancellation fee to be paid, we could have made a plan, but NO positive feedback in 8 months time? Pathetic service to say the least.