Still Debiting for Cancelled Fibre Despite Hello Peter Review

I cancelled my Vodacom Fibre at the end of December, 2018, effective end of February, 2019, but have still received a bill every month since for the amount of R998.99 (with the amount being deducted from my bank account monthly).

I have previously contacted Vodacom's call centre and was informed that the problem had been rectified but I have not received a refund nor have the debit orders stopped.

This is my second hello Peter review with no meaningful response from Vodacom thus far.