Refund of amount paid to Vodacom under false pretences - Consumer Complaint for Vodacom - Head Office

I had a tenant in my premises with a Vodacom contract through Vumatel. She requested a relocation at the end of December 2018. Her line at her new address was activated 3 months later! However, the line at my premises (her old rental address) was never released. I was lead to believe that if I pay R431.25 the line would be released which I paid on 22 August 2019 out of pure desperation after endless phone calls, emails and threats to Vodacom and getting nowhere. Somehow it was eventually released towards the end of August 2019. However, during one of my conversations with a call centre agent I was advised that the amount I paid had nothing to do with the Vumatel line, but was in fact an arrear amount on my tenant's cellphone account. I want a refund of this amount and I am not getting any joy from Vodacom in this regard. Last call received from Vodacom on 10 September at about 12:05 from a Virqulene requesting my previous tenant's contact number, which I could not furnish at the time as my boss was standing next to me waiting for assistance and she never phoned me back as promised. I am still in the dark about the refund of MY money ...