Edgars edcorn

I had an edgars credit account i recieved a call from their account department for security check .asking if i am aware of the purchase happend in mooi river and i told them it wasnt me .they told me to go their nearst store to fill in a dispute form which i did and now they have blacklisted me on which ground i dont know because when i phone their ***** department to inquire about the case they no longer have it with them