Admin fee has not been refunded

I upgraded 2 cellular phones online. I had them returned and vodacom acknowledged receipt of both phones. I then noticed on my bill that I have been debited admin charges of R150 per phone. I contacted the vodacom call centre and realized that I am dealing with a company call likeminds. You have probably out sourced your work to them. I contacted them telephonically and was told to provide invoicesstatements proving that these amounts were debited, which i done promptly, sending this information to them on [Email Removed] as I was told to do. Its been 1 week now and I have not received my refund, and neither have I received any communication from them regarding my refund. I would like to proceed with my upgrades but only until my refund is done. What is taking so long and why had nobody communicated with me thus far? Especially after numerous emails were sent out to them and vodacom. I am truly dissatisfied with the service I am receiving.