No refund on R1000 airtime purchase

On the 24 November evening, my house needed plus minus 40gigs worth of data for updates for various things. I went out to purchase the airtime as the housemates were having trouble connecting online. I came back after converting the bought airtime only to find out my mates got it resolved and bought their own 40gigs. There was clearly no need for my purchase but it was the evening and I waited till the next morning to call. Before 7am I contacted the helpline explaining that this situation was an indirect double purchase. The agent couldn't resolve the query and I spoke to the team leader. He advised he can only turn my data back to airtime, which I then asked it to be escalated considering the situation and I already have TWO contracts with vodacom so I will never use the airtime as well as the need for excess data is no longer necessary. He advised I should receive a call within 3 working days. 4 working days later I get an sms stating my query was closed???? So nobody got back to me. I had to phone and explain the situation again, after 30 mins trying to explain to the agent, it was once again given to a team leader where thet said they would call me back within 24hours as my data was refunded to airtime, but that was never my request and strongly explained in the previous call that airtime would not be used. 2 working days later, still no call backs????! Again, I HAVE TO PHONE VODACOM for answers. I call through to an agent that stated she was a coach and that she would suffice as a team leader? She tells me that it was escalated to the wrong department and the right one she couldn't get a hold of over the weekend just past, gets back to me today (4 December!) to tell me they can only give me airtime!!!! This reply after constant urges to them that I feel I was treated unfairly as I escalated this within 24 hours and was given constant reassurances that it would be resolved. I constantly told them I want someone higher then them to contact me personally as I feel that not taking my complaint seriously and I would take legal action. Even now still waiting for a call at for over an hour since the last agent 'was knocking off' and my query would be given to someone else.