Monthly fee charged on a paid up account, wrongfully accused of being in arrears

Today I received a letter from Edgars/RCS accusing me of an in-arrears account. My account is paid up since 2 months ago. However, Edgars charges a fee of R30/month without saying what this fee is for. I did not receive any service from Edgars, nor did I make any purchases during these 2 months. So what are these charges for? I have queried this “fee” but of course Edgars is yet to reply. Their telephone number is not working either. I have been a loyal customer for decades and never, ever I have I been in arrears, with my account regularly paid up in full. I absolutely do not appreciate this derogatory insult. Edgars, please close my account with immediate effect. I refuse to pay your “fee” without receiving any service in return. No wonder Edgars is in business rescue. Please contact me immediately to confirm the closing of my account. And no, I won’t be going into a store to close my account, you will do it from your side.