Complaint with Telkom

I had a 2 year cell phone contract with Telkom, last year October 2021 was my last month of my contract , I went to the local store and informed the consultant that my contract expired and checked on my profile and said that there is still a outstanding balance of amount that I must paid to shut down the account ,and after 2 days if it appear on they payment system then he will be able to stop it completely, I make the payment but I still receive invoices that wants me to pay on the account. I have been to the store 2 times to find out what the problem is but it seems to me that the consultants included the Manager is can't solve this issue.

Hope some one can help Please I am fed up

Worcester Western Cape