Debit Orders that never end

I had moved to another provider at the end of my contract. I wanted cancel my debit order and contract. Also have all my personal data deleted. I could not do this via the website or email, or app! I had to phone, and only on a certain date. I did this in early October 20. I was informed by the very friendly agent that it was all done and the debit order run-off (still don't understand this) would go one more month (Nov 20). Dec 20 another debit order goes off, so I phoned. I was informed that my data "number" associated with my account was not cancelled. Annoyed, I cancelled this too by phone. Jan 21 another debit order goes off. I believe this is the "run-off". Feb 21, another debit order goes off. Sorry Vodacom, the trust is gone, debit order reversed! Please payback the money you have ******.