SEEMS TO BE IMPOSSIBLE TO CANCEL LTE CONTRACT!!

I have a please a SMARTBROADBAND WIRELESS 50GB contract with Telkom Mobile ( ********** 404). The 24 months was up on 23/06/2018. Since we had fibre installed at our home I no longer needed the LTE and wanted to cancel after the 24 month period. 08/03/2018 First attempt to cancel the contract by sending e-mail with all relevant documents (ID, cancellation form, etc) to ********** 26/04/2018 Followed up per telephone. Was told to forward e-mail with cancellation documents to agent ********** as I did. She would "escalate" request. 05/07/2018 @10h20 phone Telkom. Thembeka undertakes to send another "escalation' request to have the contract terminated. Unfortunately I did not ask her to CC me in the e-mail. On the same day I re-forward the cancellation e-mail to ********** and ********** 07/08/2018 Go to the Telkom Store in Menlyn Park. Tsholofelu Malekutu tries to do the cancellation online. However, the online portal gave an error when she upload my id copy. She sends an e-mail with request for the cancellation to be "escalated" and asks to provide feedback to the customer as soon as its done. Attached cancellation form that was completed previously and id copy again. Case nr ********** 3 was assigned. 27/08/2018 I send an e-mail to Tsholofelu Malekutu to ask for feedback. She respnds that the case has been closed and I should apply online for cancellation. On the same day I apply online for cancellation. SMS with case nr ********** 2 received. 31/08/2018 Receive SMS which states that case nr ********** 2 has been resolved. 14/09/2018 Receive an invoice for the account once again via e-mail. Immediately phone Telkom to inquire about status of contract. Eugenia Mchunu ********** sends an escalation request to Telkom with order number ********** 27A. 09/10/2018 I send an e-mail to Eugenia Mchunu to inquire on status of cancellation. Still no reply from her. 26/10/2018 Yet another debit order for the contract goes of my bank account.......