Request for cancelation ignored

I have requested on the 28th of march 2022 for my 5G to be cancelled because i stopped working from home that was my reason . I have called the customer service numerous time with no help and tried to cancel before the new month of 01st April 2022 Now I need to pay for data when I have requested a deactivation. It's been days and I have not received any help from anyone, i spoke with one lady on the 3rd of April telling her that i have been sending cancellation emails but nothing is happening, and she said i must wait for a call and they will arrange someone to collect the router up to date no one called to arrange for that collection, I then called on the 09th April to tell them to cancel and the lady said she will do immediate cancellation and they will arrange a courier to collect and told them that they mustn't charge me for that and she told me that I owe for February, Hell No the debit order went through every month and I have proof. kindly make it a point that this router is collected and I mustn't be charged for something I didn't use for the month ... I'm so disappointed because even now I called the customer service I can't get through to them.