Account Closed, still getting billed

I paid (in full) and closed my account on the 31st of August 2017 at the Cape Gate MRP Home Branch.

I told the cashier lady that I want to close my account and she reconfirmed that it will be closed.

I received a text message stating that my account was going to be closed.

This morning, I went onto my MRP Profile and there is an amount of R 84 something outstanding on the account?

I then phoned the call centre, and after being transferred 3 times to people who could not help me, my account is still not closed.

PLEASE PLEASE PLEASE can this be done!!! I cannot be held liable to settle this amount if I followed all the steps from my side to ensure it gets done.