Poor Service.Still.or rather NO SERVICE AT ALL

Since the 25/2/2015 I logged this call with Vodacom today is the 16/3/2015 and I still do not have my money refunded in my account. I have proof that on 5/3/2015 they will refund in my bank account after I have logged it twice before telephonically (unfortunately I did not take down reference number) but the call logged on 5/3/2015 S3-8Z5CE-E7RV. When I received my statement last week it didn't even show the credit on my statement. I am still furious and can't believe Vodacom has such pathetic Customer Service. I had 1 call from someone in Helo Peter department and they also didn't do much to assist me....