Struggling to get my refund from Telkom

After charging me for something I did not sign up for, I am struggling for about 2 months now, going on to 3 months to get my refund from Telkom. I asked to speak to a manager in the Billings Department and after holding for a long time, the manager never answered my call. The agent then told me the refund was paid into my bank account 2 days ago, when I phoned my bank to find out about any pending deposits they informed me that NO deposits was made. I have been following up with Telkom almost every week. This is my 3rd post on HelloPeter!!