Cell C Please look at Your Customer Care Services

I have been a customer Cell C for quite some time now. So I got me the Home Connect Sim in last year and always informed customers to make use of the Home Connect. My complain actually is that on Friday I bought airtime for R200 to buy the 100 gig but I was unable to get the data. When I checked the again my airtime was missing. I phoned the customer care to find what the reason was I couldn't get data and the customer service agent was unable to give me a reason. Now my question is what do I do, how do I know if I should put a R200 and try again but how can I do that if the so called Customer Care can't give you answer on what is going on with the account. I can't have another R200 down the drain. Cell C is the pits because its not the first time where Customer Care agents can't explain what is happening. My thing I am the customer and they are the once having the account details in front of them but then they will nonchalantly tell you that they see you had R200 on the account but that it was used by the internet but they can't see how you struggled more than three times to have the airtime changed to data. And mind you telling me she can only help me if I have data on but how can I put data again if the customer care agent must still figure things out if I put airtime again. That R200 Cell C ate I could have used for something else. R200 is not a R2.00.