Still waiting for payback!

I am absolutely disgusted in Vodacom, i am still waiting on my migration dispute to be paid back to me since i sent my banking details through to vodacom on the 28th May'15 then again on the 1 June'15 (which i have proof it was sent in my sent items). I called Vodacom again today 19 June'15 and yet again i was told i need to wait 7 to 14 working days, but on my phone i got a sms saying this will be sorted out in 7 working days, which means today is the 7th day, but nothing is sorted out. I have asked twice for a manager to call me, but yet to receive a call. I have just realised Vodacom is the worst cellphone provider. Having to struggle to get my money back from them has been exhausting, never have i fought this much anywhere to get my money back. This is money I need, but why would Vodacom care.