*****ulant purchase on my edgars account

I am so shocked and upset . A purchase to the value of almost R9000 was made on my account on 03.02.2019. I only realised when i wanted to make a purchase and was told i overspent on my account. I immediately went to query at customer service canal walk. To find out a pruchase was made of R8670 via sunglass hut. No call from edgars at that time to ask if i am aware of this purchase. the store code of sunglass hut does not exist. It was also confirmed that its not even an online code. The edgars staff at canal walk try to assist to best of their ability. What i found weird was that even the ***** and accounts department could not see what was purchased and where this sunglass hut is located. I submitted a dispute anf opened a case. Im still waiting for ***** dept to contact me as surely they should have some questions for me or give me a reference number? Im really fed up and dissapointed.