MTN Home Fibre Month 2 Month Cancellation Drama

I have subscribed to the month to month home fibre, and because my signal was not great, I have cancelled the service giving 1 month notice. The unit was returned 31 May 2024, but another debit order was deducted on my account? Why? Also the service at Tambotie Mall MTN was terrible. When I spoke to Thato (MTN Tambotie Mall) I was advised that I need to phone the call centre for the cancellation. Then when I have phoned the call centre, I was advised that I need to go into the store again because the store needs to cancel the service. I was also advised by the call centre agent that another debit order won't go through because I have been paying upfront, and now another debit order was processed, but the unit was returned 31 May 2024? I also have on a previous occasion asked for statements to my email, which I have never received. Please can this be sorted out.