Edgar's compromising my account

I purchased clothes on account at edgars southgate on the 16th June 2018. Today on the 04/07/18 I went to Edgar's in maponya mall to pay my account and I discovered that my card was blocked and swapped, without my permission. To my surprise there was a ********** transaction that happened on the 21st June 2018. I need to know what type of authentication that was done to the person who blocked and swapped my card? To top it all the type of service I received from the Maponya and Jabulani mall Edgar's branches was pathetic. The service consultant's showed no sense of emergency to what happened to me. I'm at the point where I am not even sure if my matter was sent to the ***** department as advised,because I was not given a reference number or turn around time. I am concerned that my information/ personal details was sacrificed and an unauthorized person was allowed to transact on my account without permission. I need edgars to advise me of what transpired and I need video footages of the day when this ***** happened.