Data bundles

I ran out of data on my LTE contract. I bought a data bundle using my credit card like I always did before. This time the payment went through but no data bundle was loaded. I called telkom customer care and the consultant told me it is impossible to load a data bundle with a credit card. Why is the option available on your dashboard site and why did this work before and all of a sudden not any more? The consultant told me to reverse the transaction at the bank. So now I must waste my time at the bank just because your system is not working correctly.