Account maths don't add up

If the system allowed it, I would have rated Edgars 0! PLEASE CHECK THE MATHS ON YOUR ACCOUNT, IT DOES NOT EVEN ADD UP. Since RCS took over the accounts it is just a total mess. I am still being charged interest on R0.00 purchases! I was on the 6 month interest free plan. RCS has apparently not been informed that the s****ping of the 6 month plan has been reversed by the CEO!!!! So they just keep on charging interest even though I have not made any purchases. Blaming it on "technical error".