Cell C desperate to destroy families

Dear Cell C Thank you for destroying my already-crippled credit score by your billing department still attempting to draw money from my empty bank account for a service that was closed on 11 November 2020 when the line was dropped and ported over to another ISP: this is confirmed by Vumatel. Your customer (lack-of-)care department has confirmed that the line is closed, yet your billing department claims I owe you, CellC, money for a service that you are no longer providing me with... Please explain... I already submitted all the proof of 2 payments in October 2020 - the debit amount for October and again at the end of October a forward payment for November - since End of November was meant to be the line closure. You closed prematurely and still made off with all the funds for November. Since then, you have attempted almost R3K withrawel again on Jan 31. Please explain where your internal communication has broken down and why you have ********ised me?