Lost Identity Document

On Sunday the 19th at about 14:55 before their closing time, I went to Ackermans at the Kenako branch. I purchased school clothing for my son on my account and made a lay bye for my daughter, I received my account card back but don't remember getting my Identity Document(ID) because when I got home I opened my wallet there was my store card but my ID was not there... I went to the store the next day to ask the cashier (Siya) that was helping me that Sunday ohh woow! I was sent from pillar to post, a guy came with a box and said if my ID was not in there then its not with them. I tried explaining myself but it was as if no one was hearing me because at this point all the staff was looking at me laughing. I asked for the Manager(Lisa) and was told she was busy packing boxes at the back she can't help me, I waited then eventually when she was free to talk to me she didn't even give me a chance to tell her my story she just told me there's nothing she can do for me. I requested her to please view her camera footage just to make sure Siya did really give it back she said bluntly she'll do no such thing after I the customer begged her she then said their cameras have not been working for weeks so she can't help me of which I'm certain is not true since she wasn't willing to help me in the first place... I'm a manager myself in the hospitality industry and the service I got from Lisa and her staff was very unprofessional... I request an urgent response in this matter as I need my ID ASAP!!