Edgars refusing to close my fully paid-up account!

On the 9th September 2018 I visited the Edgars, Mall of Africa branch to make a few purchases. To my dismay when I got to the till, I was told my store account card had a 'Block Code H' and was therefore unable to complete the purchase on account. A telephone call was made to the call centre and I spoke to a consultant who advised that for some reason, the ID number against my profile was that of a deceased person. How so,I asked? I was being made to suffer for a data capturer's ineptitude at Edgars. I opened this account using my passport in 2006 when I started working and at no point did I ever update my details to my South African ID which I only received in mid-2016.It remains a mystery why my profile was updated, let alone be updated as a 'deceased person'! The very next day I emailed my latest statement, ID and passport to an email address the consultant had given me. A couple of weeks went by, no response from anyone at Edgars so I opted to visit the store at Centurion Mall where one of the staff was very helpful and understanding in trying to solve the problem. Once again, I left a copy of my ID and passport for scanning and emailing to Head Office. Fast forward to December 2018, I decided I had enough of this disservice and paid off all that was owing on my account. In January 2019, I once again went back to Edgars Centurion to now close the account, but to my disgust, nothing has been updated on my profile and the so-called Block Code is still alive and active. A call was put through from the store and once again, the struggle to prove that ID number on my profile isn't mine and was inserted by someone from within the Edgars organisation yielded no results. I left another set of copies of my identity documents. To this day, I am unable to close this account. An account I have had for over 12 yrs. Just this past month, the systems were improved at Edgars and they have begun to issue out encrypted statements. But guess what, I cant access the statement because I can't use my ID number. Surely, there must be an easier way for people whose identity has been compromised to be able to close their accounts. After all, I don't owe Edgars anything!!!!