Poor Service and incorrect account amount

I am an account holder for Edgars for more than 20 years. I have been trying to settle my account balance of about R503 according to the ststement received two months ago. Each time I go to the shop I am told my card has a problem so I can not pay until they receive new cards in order to replace my card I have been to Edgars Beauty in Hillcrest and Edgars Pavillion without any help. Staff tried .but no luck with their head office account section. Sadly all this time I am charged interest. Today the 15th of October 2020 I receieved a ststement with a reminder to pay my account. I tried to call their customer contact number *** but the call is dropped after confirming my id number as I wanted to quirry a statement with more than R1000 which I do not know where it is coming from as I have not been able to use my card for the past 3 months as it does nit work. When I went to the shop I was told they can not assist as the system does not show any cluent information and they can not even tell clients how much their balance is. I am so frustrated and di not even know where to get help. Edgars has gone down the drain and is nothing of what it use to be. They should havd closed down completely because they do not know what they are doing.