I’m frustrated

I’m so frustrated with their inability to communicate. I joined April 2025. In the beginning everything was smooth, 1st debit of R8800 was debited in May 2025. They will remind you of their payment but you will follow them just for assistance. Bayport has been debiting from my persal around R1700. I’m paying both amounts and don’t really see the point of them, it’s the third month and Bayport took money again. I’m calling them daily but I’m taken from pillar to post with a refund. When you call and leave a message no one calls back. I email but no responses, I emailed, Ntombi who is the one I started the process with, no responses and difficult to get hold of her, then I’m Im assisted by Aliziwe who I also emailed statements to show Bayport has been taking my money aswell. Still no response, I emailed my statement last month on the 13th of June but apparently it doesn’t reflect on the system that I put a claim for a refund for June, as the May refund was being handled by yonela, all these different names but no phone calls back to me I’m even tired of calling. I went as far as going to my HR to stop Bayport from getting money but I guess it’s that slow as they’ve taken for July. I’ve made 2 payments to debt busters and I want to cancel with them to go elsewhere. What’s the next step in cancelling?