Telkom bill received (after a year without notification) of paid and closed account!

Ok, so I app**** to cancel my account 28/10/19 with outstanding amount, I didn't know about the recurring bill even after line has been cut. Fair enough, I paid the outstanding amount and it was sorted. NOW, end of Oct 2020 I received a call/mail of my outstanding balance I owe Telkom. ***?! How do you bill someone after something is closed and not being used?!?!?!?! For a whole freaking year not a single SMS or E-mail notifying me of outstanding billing, and even ****ing more, that bill was also recurring for the past 12 months. How the **** does that work? I don't get notified about a recurring bill for 12 months and now all of a sudden just before CHRISTMAS I get a bill. Clever nê?! Some of us don't get a 13th check so thank you Telkom, due to you not informing me for 12 months my children won't get Christmas presents. Even more my credit score is ****ed, so good luck to me trying to get a cellphone contract. But wait there's more, I can't EFT over the ABSA app to VVM's (the lawyers) bank account (seems they get a cut), I have to get my ass up from work, drive to the bank, draw cash, I mean Christmas present money, and deposit it by hand. Thank you very much!! #sarcasm