Vodacom giving me the run around AGAIN!!

I normally pay Vodacom via their App each month. This month I did the same, but the debit order was processed as well a week later. I phoned and was told that i needed to wait 3 days for the payment to be confirmed, which i did, so i phoned back on day 4 just to be safe, at which point I am then told that now i need to email the request with the required documentation to the refunds department, that happened 1 week ago, yesterday i got an email after 5 days to ask me for the same documents i sent exactly a week ago already. I was also provided with a number *** which lwas apparently for the refuds department, when i dial that number I am routed to normal Customer care and I was told that because the account is not in arrears i cant go through to the number dialed and there is no other means of contact with the refunds department outside of their email address, which states that i will get feedback in 48 hours but we are now sitting here 1 week later with o means of contact and no refund!