Incorrectly billed on my account- still waiting for credit to be paid back

<p>In April 2015 I was incorrectly billed with R1260.01 for a 3G LAPTOP INSTALLMENT which I did not receive, have in my possession and never requested. After several phone calls and trying to speak to the CEO I was credited in July 2015 with the R1260.01. Then again I was incorrected billed for R224.23 which until today I have no clue for what it is since I cancelled my contract in May 2015 already. So Vodacom deducts R224.23 from my credit of R224.23 and indicates that I still have a credit of R902.77. I was asked to present and affidavit and bank statements with bank details which I did. After several phone calls and visits to the Canal Walk branch in Cape Town I am still waiting for more than a year for the errors to be rectified and my credit of R1260.01 to be paid back to me. Please help me the service at Vodacom is pathetic...</p>