No date or minutes for the second month running but I am in credit on my account

I have a month to month contract with Cell C. Last month (July) they did not take the installment from my account> when I called them I was advised that there was an error on their system and the best way to resolve the issue was for me to make a manual payment. My data and voice minutes would then be loaded. I made the payment but still no minutes. I called back. They confirmed my account was in credit but could not load the minutes for me but advised that next month as I was in credit that my minutes would come through. They have not.

In the meantime an amount of R 115 was taken from my credit card account for Cell C fiber. I called them, was shuffled around to several different department and then was told to email customer service. To date I have not had any feedback on this query either.

I am tired of Cell C taking my money and not giving me any service or feedback to questions asked. Please assist as soon as possible