Unfair interest charge on Airtime Advance

I want to warn Cell C users not to borrow R3 advance airtime, as you will be **********. Cell C charges the same interest on R3 as on R5. They now restricted the advance- option to R3 only, even though my repayments are on time. This is totally ************ and unacceptable profiteering. If Cell C don't set right this unfair interest charge system asap, I will report them to the revelant authority bodies.<br> <br> Shireen Coetzee