Edgars account nightmare since RCS took over

My Edgars account is an absolute mess since RCS took over. My instalment is different every month, and the statement is so confusing and difficult to read. My instalment went from R213 to R417 and I did not buy anything on my account for the last 4 months. How is that even possible? I sent them 5 e-mails to the same address before getting a generic response saying this is my outstanding amount, instalment etc. The instalment on this e-mail is R167. By this time I have already paid R250 as according to me this should be more than my instalment. Just after receiving the e-mail stating that my instalment is R167 I received an SMS stating that my payment was due on the 1st. I have sent them 2 e-mails since then, with absolutely no reply. As soon as my account is paid up, I am closing this account and buying from elsewhere, I can't deal with nonsense like this. I have had this account for 12 years and never had any issues.