Bad customer service

I took a contract with onair 2023 and last month I called to confirm the end of contract cancellation and the customer care lady told me that am done paying and they should stop debiting from my account to my surprise again this month they still debited from my account,when I called same story again that am done paying for my account and they should stop debating from my account….until when should I keep hearing one thing over and over again….they can’t even send me a proof that am done paying….can onair please stop taking my money